The Froschfelsen is a natural monument

Natural Monument

A natural monument is a natural or natural/cultural feature of outstanding or unique value because of its inherent rarity, representative of aesthetic qualities or cultural significance....

 near Ilsenburg in the northern Harz

Harz

The Harz is the highest mountain range in northern Germany and its rugged terrain extends across parts of Lower Saxony, Saxony-Anhalt and Thuringia. The name Harz derives from the Middle High German word Hardt or Hart , latinized as Hercynia. The legendary Brocken is the highest summit in the Harz...

 in central Germany. It is a formation of granite

Granite

Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite usually has a medium- to coarse-grained texture. Occasionally some individual crystals are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic...

 rocks that take the shape of a frog, hence the name.

The Froschfelsen is located on the Meineberg hill on the western side of the Ilse

Ilse (river)

The Ilse is a river that rises at about 900 m above sea level on the northern slopes of the Brocken. During its first few kilometres it flows as a narrow brook, almost invisible to the observer, down the side of the Brocken...

 valley. It is a hiking destination and No. 5 in the system of checkpoints in the Harzer Wandernadel

Harzer Wandernadel

The Harzer Wandernadel is a network of checkpoints for walkers in the Harz mountains in North Germany. It includes a system whereby the hiker can earn badges at different levels by walking to the various checkpoints in the network and recording them...

hiking network.