The Gustav Jakob Cave nickname Gustl was discovered in 1936 by Gustav Fetzer and Jakob Kazmaier. The cave is more than 400 meters long and the longest dry cave in the Swabian Alps.
The waterfall is nestled in a beautiful landscape in Bad Urach. It is a famous and easy trail of less than 2 km one way along Brühlbach (a stream).
This waterfall is a popular year-round attraction in the Swabian Alps. Weekends and summer holiday are overcrowded. It looks like a pilgrims' path even in the evening. The flow of the waterfall is best after rainfall and during the thawing period. The flow can be between 70 and more than 400 liters each second.
In winter the waterfall can freezes which looks terrific. The sunlight is best in the morning, and it is not that busy.
Although there are several car parks, they fill up soon from midday onwards in the summer. The large car park area is called P 23, and the fee is 2 € until 4 p.m. Afterwards parking is for free.
The Falkenstein Cave is located in the Swabian Alps, close to Bad Urach and south of Grabenstetten. From the car park, it is a short walk to the entrance.
Summer months and dry weather are the best conditions to get about 150 meters deep inside the cave. Of course, you can get deeper into the cave, but it's highly recommended to do with a guide. Check the weather forecast first, if severe weather is predicted don't enter the cave. At the end of July 2019 two men; a guide and his client got trapped in the cave. The water level became too high for leaving. A rescue team of 90 people got them out alive. So please, the Falkenstein Cave is not accessible during winter, when heavy rainfall is predicted and, after rains. None of these caves shouldn't be entered from October to mid-April. Usually, caves are home for protected bats in the colder season.