Mountain caves “ARE” the most effective natural places to escape

Revelations 16 direct solar heating/scorching.

Revelation 16:9 People were ... They were seared by the intense heat and they cursed the ... give him glory. They were scorched by the fierce heat, ...

Yes, the sun becomes 7 times more intense. If we set aside the 415–430°F calculation and instead ask, “What temperature would make sense if God increased the Sun's effect enough to produce the intense heat described in Revelation, while still allowing humanity to survive?”, then 120°F is a reasonable hypothetical working number for Walland, Tennessee.

Revelation 16:8–9 says that the Sun is given power to scorch people with fierce/great heat, after which they curse God and do not repent.

So let's use 120°F for Walland, Tennessee.

If a normal Walland summer afternoon is around 88°F, then:

88°F → 120°F

That's an increase of about 32°F.

That is extraordinarily hot, but it is not automatically fatal to everyone. People could survive by seeking shade, going underground, staying hydrated, and avoiding prolonged exposure—although 120°F with high humidity would be extremely dangerous.

And this makes the caves in Revelation particularly interesting.

At 120°F outside, a deep cave in the Smoky Mountain/Walland region could remain dramatically cooler because the surrounding rock is insulated from rapid surface temperature changes. People could potentially seek refuge underground, particularly during the hottest part of the day.

What I think is the better way to frame the biblical scenario

Rather than saying:

“The Sun becomes 7× hotter → Tennessee becomes 430°F.”

I'd frame the hypothetical as:

“The Sun's intensity becomes dramatically greater, producing extraordinary surface heat ALL OVER THE WHOLE WORLD—perhaps something on the order of 110–120°F in places such as Walland.”

That is a speculative interpretation, not a temperature that Scripture gives us. Revelation simply tells us that the Sun will scorch people with great/fierce heat.

And there's something especially interesting about 120°F: it is hot enough that the biblical description of people desperately seeking shelter becomes much easier to visualize, while still leaving room for people to survive in protected environments.

If you'd like, I can next calculate what Walland would feel like at 120°F with its normal Tennessee humidity—specifically the heat index, how long a person could safely remain outside, and how cool a deep Smoky Mountain cave might remain.

Yes, I would like that answer

Yes. If we continue with your 120°F Walland scenario as a hypothetical, we can make it much more concrete.

Walland's normal July climate is about 88°F for the high, 69°F for the low, and 71% average humidity.

At 120°F in Walland

And direct sunlight makes it worse. The NWS notes that its heat-index values are for shaded conditions and that direct sun can increase the apparent heat by up to about 15°F.

What would happen to a person?

At 120°F, the body has tremendous difficulty getting rid of heat.

Sweating normally cools us because evaporation removes heat from the skin. But high humidity prevents sweat from evaporating efficiently.

So imagine:

120°F air + high humidity + direct sunlight

A person outside would have to get into shade, stop physical activity, and have access to water and cooling. Prolonged exposure could become life-threatening very quickly.

I would not put a precise "safe number of minutes" on it, because individual conditions—humidity, wind, hydration, clothing, age, health, acclimatization and direct sun—make that highly variable.

Now consider a deep cave near Walland

This is where our question about Revelation gets particularly interesting.

A sufficiently deep cave doesn't simply become 120°F because the outside air is 120°F.

The National Park Service explains that temperatures deep inside caves are generally controlled by the surrounding bedrock and tend to remain close to the area's average annual temperature. Seasonal surface changes have little effect at depth.

Walland's current annual mean is around 60°F.

So, as a rough conceptual model, you could have:

Location

Hypothetical temperature

Direct sunlight outside

120°F

Shaded surface

~120°F air

Cave entrance

Increasingly influenced by outside heat

Deep cave initially

~55–65°F

Deep cave after prolonged environmental heating

Gradually warmer

That last line is important: the cave isn't magically immune to a long-term change in climate.

The rock is an enormous heat sink, so it takes much longer to heat than the atmosphere. NPS observations show that deep cave temperatures can be remarkably stable.

There is even a real-world example showing how difficult it is to change a deep cave's temperature: human visitors and their body heat have measurably altered the temperature of Timpanogos Cave over time.

What would the cave feel like?

If you walked from 120°F outside into a deep cave at, say, 60°F, the difference would be about:

60 degrees Fahrenheit.

That would be an enormous refuge from the surface heat.

And the cave would likely be very humid. Many caves have relative humidity near 100%.

At 60°F and near-saturated humidity, that would actually feel cool compared with the 120°F surface.

And this brings us back to Revelation

If we keep our 120°F Walland hypothetical, the biblical imagery becomes easier to visualize:

Sun becomes extraordinarily intense
↓
Surface temperatures become devastatingly hot
↓
People exposed to the Sun suffer severe scorching
↓
People seek shelter in mountains and caves
↓
Deep caves initially provide a dramatically cooler environment
↓
Yet Revelation 16:9 says that people respond to the scorching by cursing God rather than repenting

But I would make one distinction very clear:

The Bible does not tell us that the caves are specifically intended to protect people from a 120°F solar catastrophe. That's our physical interpretation of what such a scenario might look like.

And 120°F itself is not a biblical prediction. We're using it as the reasonable hypothetical you proposed.

One fascinating consequence

If the outside really remained around 120°F for an extended period,

the Smoky Mountain caves

could become some of the coolest natural places available.

So if you're imagining Revelation's scene geographically, the mountains around Walland would actually make a great deal of physical sense as places where people would seek shelter—not because Scripture says "go into caves to escape the Sun," but because caves naturally buffer surface temperature extremes.

If you'd like, I can next work out a day/night scenario for Walland at 120°F—for example, 120°F daytime, what would nighttime be, what happens to the Little River, vegetation, livestock, and how long the caves could remain cool.

Yes i would like you to do that

Absolutely. Let's keep 120°F as our hypothetical Walland daytime temperature and see what a full day and night might look like. This is a thought experiment, not a prediction of Revelation or a forecast.

For reference, Walland's normal July climate is about 88°F high, 69°F low, 79°F mean, and 71% humidity.

☀️ A hypothetical 120°F day in Walland

Let's suppose the Sun produces the conditions necessary for Walland to reach 120°F.

A reasonable illustrative day might look something like:

Time

Hypothetical Walland temperature

6 AM

85–90°F

9 AM

100°F

Noon

112°F

2–4 PM

120°F

6 PM

112–115°F

9 PM

100–105°F

Midnight

90–100°F

5–6 AM

85–95°F

These aren't calculated predictions—the nighttime temperature is especially uncertain because the amount of cooling would depend on clouds, humidity, wind, soil moisture and how much heat the ground had accumulated.

But there's an important consequence:

🌙 The nights might not provide much relief.

Today's Walland July temperature typically falls from about 88°F in the afternoon to 69°F overnight.

In our hypothetical, however, the ground, rocks, buildings and surrounding mountains would be absorbing enormous amounts of heat during the day.

So even after sunset, the environment could remain dangerously hot.

💧 What happens to the Little River?

This gets fascinating.

The Great Smoky Mountains are normally extremely wet, and the National Park Service notes that afternoon showers and thunderstorms are common.

The Little River system near Townsend is monitored for flow, river height and water temperature.

At first, with temperatures around 120°F:

Evaporation would increase enormously.

Water exposed to the atmosphere would continually lose energy through evaporation.

That means:

120°F air
→ enormous evaporation
→ falling soil moisture
→ falling stream levels
→ stressed vegetation
→ eventually reduced groundwater recharge

But there's an interesting counter-effect.

If the atmosphere contained enormous amounts of water vapor, cloud formation and thunderstorms could initially become extremely intense.

So you could potentially have periods of:

extreme heat → enormous evaporation → violent thunderstorms → flooding → extreme heat again

before the water system began to fail if the long-term heat overwhelmed the region's ability to replenish its water.

That's why I wouldn't assume that the Smokies would immediately turn into a desert.

🌳 What happens to the Smoky Mountain forest?

This would probably be one of the first obvious signs of a catastrophe.

Today's Smokies support an extraordinarily diverse forest ecosystem, but plants depend on temperatures and moisture within a range they're adapted to.

At 120°F, especially combined with high humidity and intense sunlight:

And once the forest canopy began disappearing, the ground would receive even more direct sunlight, creating a vicious cycle.

Heat → vegetation loss → less shade → hotter ground → more evaporation → more vegetation loss.

🐄 What about livestock?

This would be extremely dangerous.

Cattle, horses, goats, dogs and other animals can't simply sweat like humans do, and different species have very different heat tolerances.

At 120°F, livestock would need access to:

deep shade + abundant water + airflow + cooling opportunities.

Animals confined in barns or poorly ventilated structures could be in particular danger because the structures themselves would become heat reservoirs.

🕳️ Now the really interesting part: the caves

This is where your earlier question about Revelation becomes especially intriguing.

A deep cave would initially be radically different from the surface.

Cave temperatures are generally controlled by the surrounding rock and tend to approximate the annual average temperature of the region, rather than the current day's temperature. Surface temperature fluctuations diminish as you go deeper into the bedrock.

So imagine:

Outside Walland: 🔥 120°F

Deep cave: perhaps roughly 60°F-ish, depending on the particular cave and elevation.

That would be an extraordinary refuge.

The difference could be roughly:

120 − 60 = 60°F

That's comparable to walking from a furnace into an air-conditioned building.

But could the cave stay cool indefinitely?

No.

This is important.

If the entire surface environment remained dramatically hotter for a very long time, some of that heat would eventually penetrate the surrounding rock.

But it would happen much more slowly than the atmosphere heats.

The National Park Service explains that deep cave temperatures are remarkably stable and that long-term climate changes can eventually affect cave environments.

So I'd envision it this way:

First days/weeks

Outside: 120°F
Deep cave: ~60°F

The cave is an excellent refuge.

Months

The surface remains extraordinarily hot.

The rock surrounding the cave begins slowly absorbing additional heat.

Deep cave: perhaps gradually warming.

Much longer

If the entire regional climate remains at this extreme level, the cave eventually warms substantially.

The cave isn't creating cold; it's delaying the arrival of the surface heat.

💦 And water inside the cave becomes extremely important

A cave containing groundwater, springs or an underground stream would be particularly valuable.

Cave humidity is often extremely high—frequently approaching saturation.

That means a deep, wet cave could provide something the surface increasingly lacks:

cool temperature + water + protection from direct solar radiation.

But groundwater isn't unlimited.

The National Park Service notes that drought and other changes can lower groundwater levels and alter cave streams, pools and other underground water resources.

So a prolonged extreme-heat event could eventually affect the underground water supply too.

🌙 What would nighttime in a cave be like?

This is perhaps the most striking contrast.

Imagine outside at midnight:

95–100°F

while deep underground:

~60°F

And because the cave isn't exposed to direct sunlight, there is no enormous daytime solar load entering the cave.

So someone could potentially spend the hottest part of the event underground and emerge only when absolutely necessary.

Putting the whole Walland scenario together

If we use 120°F as our hypothetical:

☀️ Surface:
~120°F

🌙 Nighttime:
perhaps ~85–100°F rather than today's ~69°F

🌊 Little River:
initially tremendous evaporation; eventually potentially severe water stress if the extreme conditions persisted

🌳 Smoky Mountain forests:
severe heat and water stress, followed by widespread vegetation loss if prolonged

🐄 Livestock:
extreme heat danger; shade and water become essential

🕳️ Deep caves:
initially potentially around 60°F, providing extraordinary protection from the surface heat

💧 Underground water:
potentially one of the most valuable resources, although prolonged climate change could eventually affect groundwater

And this gives an interesting physical perspective on the biblical imagery: if people were experiencing extraordinary scorching heat, mountain caves would genuinely be among the most effective natural places to escape direct solar heating. That's a physical inference, though—not something Revelation explicitly says is the reason people enter the caves.

One final thought: Revelation 16:8–9 specifically says the Sun's heat scorches people, yet they curse God rather than repent. If you're trying to understand how that passage could correspond to a survivable but terrifying physical event, 120°F is actually a much more useful hypothetical than 425°F, because it permits us to

meaningfully examine human survival,

caves, water, animals and the Smokies without assuming an instantly uninhabitable Earth.

 

Editor’s Note: Isaiah shows God’s mercy= a different event.

But Revelation’s SCORCHING OF HUMANITY

IS FOR REAL.