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Select Date and Travellers
US$ 39.68
2 travellers
What to Expect

Explore with us the wild, completely nature Gustav-Jacob Cave. With a length of 210 metres, the main cave forms the longest passage cave in the Swabian Alb. The cave meanders through a mountain spur below the ruin of Hofen Castle and was only discovered in 1936 by the two community worker Gustav Fetzer and Jakob Kazmaier.
Here children have a clear advantage, because the cave is quite low, almost always narrow. Therefoe, standing upright tend to be the exception for adults. A high fun and adventure factor is therefore guaranteed. In the cave we are impressed by real works of art made of stalactites and as soon as we are bent around a corner, the picture is already changing again.

A few dates at a glance:

Community of Grabenstetten, district of Reutlingen
210 meters
Air temperature:
10-12°C all year round
Beautiful stalactites and sinter formations
Only possible from 01 April to 30 September.

Tour course:
A few dates at a glance:
Meeting place:
Parking place Ruine Hofen on the outskirts of Grabenstetten
approx. ca. 210 meters
Duration of the tour:
approx. 2 hours
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Important Information
Departure Point
Hofener Weg 65, 72582 Grabenstetten, Germany
Return Details
Returns to original departure point
  • Guided tour through the Gustav-Jacob Cave
  • The necessary equipment in the form of helmet and headlight will be provided.
  • Insolvency insurance
  • Arrival and departure to the parking lot Ruine Hofen is by your own car
  • Catering (if necessary)
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Additional Info
  • Confirmation will be received at time of booking
  • Not wheelchair accessible
  • Not recommended for travelers with back problems
  • Not recommended for pregnant travelers
  • No heart problems or other serious medical conditions
  • This tour is unfortunately not suitable for people with reduced mobility. Otherwise, a normal physical condition is sufficient.
  • Sturdy shoes, ideally ankle-high, are recommended. (can get wet and dirty)
  • For people who suffer from claustrophobia or fear of dark, this tour is also not suitable.
  • Good surefootedness required for steep and sometimes slippery accesses.
  • Clothes can get dirty! Please take outerwear with you to change after the tour.
  • Gloves are recommended.
  • In case of thunderstorms and heavy rainfall we reserve the right to cancel the tour, even at short notice, for safety reasons.
  • Travelers should have a moderate physical fitness level
  • This tour is less suitable for people who are clearly overweight and claustrophobic.
  • This tour is suitable for children 6 years and older.
  • This experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund
  • This experience requires a minimum number of travelers. If it’s canceled because the minimum isn’t met, you’ll be offered a different date/experience or a full refund
  • This tour/activity will have a maximum of 8 travelers
Cancellation Policy
For a full refund, cancel at least 24 hours in advance of the start date of the experience.
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Questions & Answers
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Key Details
  • SwabianTravel
  • Duration: 2h
  • Mobile Ticket Accepted
  • Instant confirmation
  • Languages Offered: English, German
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