アルター・シュトールベルクの天然記念物・トップ17

They say there are 111 steps.

The path up to the cave is very steep. It can be quite slippery in places, especially on the downhill. Please be careful!

The Old Stolberg area consists predominantly of gypsum and anhydrite from the Zechstein. Due to the water solubility of this rock, one of the most beautiful karst landscapes in the southern Harz has emerged. The rock layers of the Old Stolberg are raised above their surroundings and rise over 100 m above the surrounding area. Rainwater sinks into the fissures. It collects in impermeable interlayers. The groundwater level in the area is therefore between 25 and 80 m deep. The Kalkhüttental valley cuts deep into the strata. This creates exposed fissures from which groundwater can escape during periods of high water pressure. This overflow is the Kalkhüttenquelle spring, the only spring in the Old Stolberg area. It only flows during periods of high water pressure and reacts to precipitation with a significant time delay. 500 m downstream lies the Urbachquelle spring, which flows year-round.

A detailed description can be found under Karstwanderung Försterhöhle. For the benefit of the bats, the cave should be off-limits to everyone.

Tough climb to the stamp point

The Reesberg doline lies on a geological boundary between the Bunter sandstone and the anhydrites of the Zechstein. The spring water emerging from the Bunter sandstone is very clear and therefore has a high dissolving potential. It can absorb up to two grams of gypsum per liter and then flows underground. Source: Harzlife

Not a small cave with very beautiful drip water karst. If you want to explore the entire cave you will need a lamp.

Impressive natural monument. An information board explains the background.