Top 20 Caves 하르츠 산맥

The cave is called the lower church, or the ruins of the upper church from the 9th century can still be seen.

Due to the constant influence of wind and weather, the Devil's Wall has of course continued to change over thousands of years. A special form of weathering can be seen in the thunderstorm grotto, which is also known as honeycomb weathering.

One of the many labeled rocks in the Devil's Wall area.

The Pioneer Tunnel is a stop on the Selketalstieg between Alexisbad and Mägdesprung and is located on the east side of the picturesque Selke Valley. This artificial, around 10 meters long and relatively low passage was driven through the rock in May 1900 within a few days. The hiking trail leads through here. There is no alternative route over or around the rock, so if you don't want to turn back you have to squeeze through the narrow tunnel. On the south side of the tunnel you have a beautiful view of the Selke Valley and the surrounding mountains. Source: https://www.harzlife.de/bilder/pioniertunnel.html

This is a beautiful cultural monument. A visit is highly recommended!

You definitely have to have been there, very nice there

The Thunderstorm Grotto is the name of a striking rock formation on the Devil's Wall between Blankenburg (Harz) and the district of Timmenrode. It is located on the hiking trail, which was developed in 1934, on the north side of the Devil's Wall, east of the Heidelberg rock formation, at the edge of the Sautrog (a small, shallow valley). The Thunderstorm Grotto is marked with a sandstone plaque. An additional plaque explains the history of the formation of the striking sandstone weathering. The Fox's Den has been located near the Thunderstorm Grotto since 1934. (Source: Wikipedia)

You would have to be a time traveller, I would have liked to have seen the upper (cloister) and lower church (Volkmars Keller) in their heyday.