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Seneca Caverns submerged stairs to seventh level

United States United States Show cave

Seneca Caverns

10 °C inside, all year.

Show caveStalactites

See the descentHow to visit

Photo by and ©2007 Dustin M. Ramsey ( Kralizec! ) · CC BY-SA 2.5

The descent

The entrance, at 245 m.

The real relief above Seneca Caverns, measured on the Copernicus model every 30 m, and the cave going down at the same vertical scale.

depth not publishedEntrance1.0 kmvertical × 31.9depth not publishedEntrance1.0 kmvertical × 69.0

The depth is the one published by those who explored it; the shape of the galleries is a sketch, not a survey. No depth has been published for this cave yet.

245m

Entrance altitude

from the 30 m relief model

10°C

Inside, all year

the yearly average outside, at the entrance

21m

Rock above

the highest point within 1.5 km

Inside and outside

10 °C inside, all year.

Deep inside, a cave keeps the average temperature of the year outside: about 10 °C here, in January and in August. In July the afternoon reaches 29 °C at the entrance, 18 °C warmer than inside: take a jacket. The best months to escape the heat are from July to August.

outside, at the entrance (245 m)inside
  1. 1°-7°Jan
  2. 2°-6°Feb
  3. 8°-2°Mar
  4. 16°4°Apr
  5. 22°10°May
  6. 26°16°Jun
  7. 29°18°Jul
  8. 28°17°Aug
  9. 25°13°Sep
  10. 17°6°Oct
  11. 10°0°Nov
  12. 3°-4°Dec
Inside: 10 °C all yearEscape the heat: Jul–AugFrost outside: Dec–FebWettest: May

Outside: afternoon and night averages for 1991–2020 (NASA POWER) brought to the altitude of the entrance. Inside: the yearly average, which deep parts of a cave keep. Near the entrance it follows the weather a little.

Caves in Seneca County, Ohio, USA

Seneca Caverns is a show cave in United States. The entrance is at 245 m. It has stalactites and stalagmites. It is open to visitors.

Read more on Wikipedia

Getting there.

Plan the visit

Guided tours, a bed nearby, a car.

Car hire at TOL airport (Toledo)Discover CarsSee prices 

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

From above.

The ground above the cave, with the relief shaded, the line of the section and what people have mapped around the entrance.

The ground above Seneca Caverns (Sentinel-2) N 1.5 km

Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 6.0 × 6.0 km, north up. The line is the section above. Points © OpenStreetMap contributors.

Around the entrance.

    • other cave entrances within 3 km
    • springs within 2 km
    • sinkholes within 3 km
    • caving clubs and spots within 15 km
    • viewpoints within 3 km
    • marked hiking routes within 3 km
    • climbing crags within 3 km
    • named waterfalls within 4 km
    • car parks within 2 km
    • information boards and visitor centres within 3 km
    • bus stops within 2 km
    • campsites within 8 km
    • hotels and guesthouses within 8 km
    • restaurants and cafés within 3 km

    Counted in OpenStreetMap, the map anyone can edit, around the entrance. A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).

    Towns nearby

    • Bellevue6.0 km in a straight line
    • Mount Carmel7.2 km in a straight line
    • Clyde12 km in a straight line
    • Monroeville15 km in a straight line
    • Green Springs15 km in a straight line
    • Norwalk22 km in a straight line
    • Willard23 km in a straight line
    • Milan24 km in a straight line

    Month by month

    The weather outside, at the entrance.

    JanFebMarAprMayJunJulAugSepOctNovDec
    Afternoon12816222629282517103
    Afternoon12816222629282517103
    Night-7-6-24101618171360-4
    Rain (mm)6057718810398908782766966
    Rainy days108101214141312101099
    Sun hours/day2.74.14.96.37.18.48.98.07.04.93.62.2
    Snow on the ground (cm)1616102000000514
    AfternoonAfternoonNightRain (mm)Sun hours/day
    Jan11-7602.7
    Feb22-6574.1
    Mar88-2714.9
    Apr16164886.3
    May2222101037.1
    Jun262616988.4
    Jul292918908.9
    Aug282817878.0
    Sep252513827.0
    Oct17176764.9
    Nov10100693.6
    Dec33-4662.2

    Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the altitude of the entrance (245 m) with the standard lapse rate. Not a forecast.

    Photographs

    Inside and around.

    Seneca Caverns tourist gift shop
    Photo by and ©2007 Dustin M. Ramsey ( Kralizec! ) · CC BY-SA 2.5
    Vermiculations (Seneca Caverns, Ohio, USA) 1
    James St. John · CC BY 2.0
    Bellevue OH 2023a
    Antony-22 · CC BY-SA 4.0

    Recent years

    Wet years, dry years.

    Rain of each month as a share of the 1991–2020 average. A dry year means a lower river and hotter rock; a wet one, more water in the gorge.

    JanFebMarAprMayJunJulAugSepOctNovDec
    2020156%97%155%74%99%61%64%107%103%137%105%59%
    202172%64%65%67%106%100%151%97%112%153%57%142%
    202249%139%93%78%114%86%133%110%87%36%67%50%
    2023152%125%149%62%45%84%112%165%26%106%50%74%
    2024153%40%97%147%129%72%57%71%50%20%87%156%
    202536%90%93%116%108%107%119%34%38%91%48%81%

    130% or more: wet month 70% or less: dry month

    Caves nearby.

    Seneca Caverns

    United States

    • —Depth
    • —Galleries
    • 245 mEntrance altitude
    • 10 °CInside, all year

    Crystal Cave

    United States · 47 km

    • —Depth
    • —Galleries
    • 191 mEntrance altitude
    • 10 °CInside, all year

    See the guide

    Zane Shawnee Caverns

    United States · 114 km

    • —Depth
    • —Galleries
    • 384 mEntrance altitude
    • 10 °CInside, all year

    See the guide

    Ohio Caverns

    United States · 130 km

    • —Depth
    • —Galleries
    • 385 mEntrance altitude
    • 10 °CInside, all year

    See the guide

    Where these figures come from

    Name, type, published depth and length, visitorsWikidata (Q7450277) · CC0
    The relief above, the entrance altitude, the section and the 3D modelCopernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA
    ClimateNASA POWER, 1991–2020
    Entrances, springs, sinkholes, opening hours and what is around© OpenStreetMap contributors · ODbL
    ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons

    Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.

    The family

    Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?

    Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

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    cavesCavernyasEvery cave with its real depth and length: the rock above, the temperature inside all year, and how to visit.You are here
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    viewpointsViewyasEvery viewpoint with its real 360° panorama: the peaks you can name, how far you see and where the sun sets.Coming soonVisit
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