The diameter and depth of the chasm are impressive. It's scary. I advise caution in the cold months (and not only) as there is ice everywhere and the area becomes a skating rink, although there are protective barriers. I speak from lived experience....

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Alessandro Lovo

August 17, 2021

Mountain biking

Avoid by bike. Extremely difficult even with a hand bike, and you only risk ruining it. To be avoided.

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A. 🐺

January 8, 2023

Hiking

Impressive and spectacular sinkhole of karst origin, which descends as a well for 46 meters, then continues with a lateral corridor and falls with another well, reaching the overall depth of -96 meters! The dark and mysterious mouth is illuminated by a natural skylight dug into the karst ceiling. At the bottom of the cave the ice remains throughout the year.

It is called indiscriminately Caverna or Voragine (del) Siesòn or Sciasòn.

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Routes here

Best routes to Siesòn Cave (or Sciasòn Chasm)

4.7

(67)

260

hikers

1. Campolongo Fort and Caverna del Siesòn Trail

7.20km

02:20

270m

Gravel trail through pine forests to a WWI fortress and mysterious karst cave on Asiago plateau.

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Moderate

4.7

(26)

151

hikers

2. Campolongo Hut – Fort Campolongo loop from Forte Campolongo

3.35km

01:18

160m

Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.

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3. Fort Campolongo – Campolongo Hut loop from Mezzaselva

18.1km

06:09

830m

Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.

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Hard

Details

Informations

Elevation 1,580 m

Weather

Wednesday 4 February

6°C

1°C

11 %

Additional weather tips

Max wind speed: 4.0 km/h

Most visited during

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Location: Rotzo, Vicenza, Veneto, Italy

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Siesòn Cave (or Sciasòn Chasm)

1. Campolongo Fort and Caverna del Siesòn Trail

2. Campolongo Hut – Fort Campolongo loop from Forte Campolongo

3. Fort Campolongo – Campolongo Hut loop from Mezzaselva

Other Popular Places to Check Out

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