Located in Bath County, Virginia, Clarks Cave is a cave. It sits roughly 33 km (21 mi) NNE of Clifton Forge.
Clarks Cave is a cave in Bath County, Virginia. It is a major archeological site, and was mined for saltpeter in the 1800s. The cave is 6.43 miles, and has 6 entrances. It is considered an excellent example of a joint-controlled cave, with an extensive maze of passages than run along joints in the rock, a Lower Devonian limestone.From the Wikipedia article “Clarks Cave”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Clarks Cave the sunrise point swings a long way through the year: about 59° (ENE) at the June solstice and 120° (ESE) in late December. Sunset moves from 301° (WNW) in June to 241° (WSW) in December, and the midday sun climbs to 75° in summer but only 28° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:23 AM | 90° E | 7:31 PM | 271° W | 52° | 12h 08m |
| June solstice (Jun 21) | 5:57 AM | 59° ENE | 8:46 PM | 301° WNW | 75° | 14h 49m |
| September equinox (Sep 22) | 7:07 AM | 89° E | 7:18 PM | 271° W | 52° | 12h 10m |
| December solstice (Dec 21) | 7:32 AM | 120° ESE | 5:03 PM | 241° WSW | 28° | 9h 31m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Caves are lit artificially — show caves have fixed lighting, so a fast lens and high ISO beat flash, which flattens formations.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:06 AM | 7:35 AM | 8:15 AM | 4:43 PM | 5:23 PM | 5:52 PM | 9h 49m |
| February | 6:43 AM | 7:10 AM | 7:47 AM | 5:21 PM | 5:58 PM | 6:25 PM | 10h 48m |
| March | 7:05 AM | 7:31 AM | 8:06 AM | 6:51 PM | 7:26 PM | 7:52 PM | 11h 55m |
| April | 6:17 AM | 6:44 AM | 7:19 AM | 7:20 PM | 7:55 PM | 8:22 PM | 13h 11m |
| May | 5:40 AM | 6:09 AM | 6:47 AM | 7:45 PM | 8:23 PM | 8:52 PM | 14h 14m |
| June | 5:25 AM | 5:56 AM | 6:36 AM | 8:05 PM | 8:44 PM | 9:16 PM | 14h 48m |
| July | 5:38 AM | 6:09 AM | 6:47 AM | 8:04 PM | 8:42 PM | 9:13 PM | 14h 34m |
| August | 6:06 AM | 6:35 AM | 7:11 AM | 7:38 PM | 8:14 PM | 8:42 PM | 13h 39m |
| September | 6:35 AM | 7:01 AM | 7:36 AM | 6:54 PM | 7:29 PM | 7:55 PM | 12h 27m |
| October | 7:01 AM | 7:28 AM | 8:04 AM | 6:07 PM | 6:42 PM | 7:09 PM | 11h 15m |
| November | 6:32 AM | 7:01 AM | 7:39 AM | 4:29 PM | 5:08 PM | 5:36 PM | 10h 08m |
| December | 6:59 AM | 7:29 AM | 8:10 AM | 4:20 PM | 5:01 PM | 5:30 PM | 9h 32m |
Local time (America/New York), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Clarks Cave, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.3 hours on a moonless night), and the core peaks around 23° above the southern horizon. Our light-pollution model puts the sky at about Bortle 2 (typical truly dark site), which is excellent for astrophotography.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -1° | — |
| February | 5:16 AM – 5:36 AM | 0.3 | 13° | SE → SE |
| March | 4:24 AM – 5:54 AM | 1.5 | 19° | SE → SSE |
| April | 2:28 AM – 5:08 AM | 2.7 | 23° | SE → S |
| May | 12:28 AM – 4:18 AM | 3.8 | 23° | SE → S |
| June | 10:39 PM – 3:59 AM | 5.3 | 23° | SE → SW |
| July | 10:33 PM – 2:33 AM | 4.0 | 23° | SSE → SW |
| August | 9:52 PM – 12:32 AM | 2.7 | 23° | S → SW |
| September | 8:58 PM – 10:28 PM | 1.5 | 20° | SSW → SW |
| October | 8:10 PM – 8:30 PM | 0.3 | 13° | SW → SW |
| November | Below 10° in darkness | — | 1° | — |
| December | Below 10° in darkness | — | -19° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 2 Bortle 2 — Typical truly dark site. The summer Milky Way shows rich structure; clouds look like black holes in the stars. Modeled zenith brightness ≈ 21.74 mag/arcsec². Aurora needs roughly Kp 7.5+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show September as the clearest month (about 54% average cloud cover) and December as the cloudiest (68%). July is the warmest month and January the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 67 | 70 | 75 | 82 | 90 | 89 | 95 | 92 | 92 | 90 | 75 | 74 |
| Low °F | -8 | -5 | -8 | 20 | 24 | 35 | 46 | 44 | 35 | 22 | 10 | 3 |
| Precip. (in) | 2.6 | 3.0 | 3.1 | 4.1 | 4.5 | 4.3 | 4.3 | 3.5 | 3.8 | 3.4 | 3.0 | 3.4 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this cave
- Use manual focus with focus peaking in low light.
- Never touch formations — skin oils stop their growth.
- Follow White-nose Syndrome decontamination rules where posted to protect bats.
- Many show caves restrict tripods on tours; ask in advance or bring a small beanbag.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Cave interiors stay at a constant temperature year-round; summer tours fill up, so book ahead.
Suggested gear: Fast lens (f/1.8–f/2.8), High-ISO camera, Small beanbag. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Clarks Cave, closest first.
Campgrounds nearby (Recreation.gov)
- Hidden Valley Campground10.7 km (6.6 mi) · reservable
- Blowing Springs16.4 km (10.2 mi) · reservable
- Pocahontas Campground23 km (15 mi)
- Bolar Mountain Recreation Area27 km (17 mi) · reservable
- Mcclintic Point27 km (17 mi) · reservable
FAQ
When is the best time to photograph Clarks Cave?
What time is golden hour at Clarks Cave?
Where does the sun rise and set at Clarks Cave?
Can you see the Milky Way from Clarks Cave?
Do you need a permit to photograph at Clarks Cave?
How far is Clarks Cave from Clifton Forge?
Sources
Location data: Wikidata, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.