The area around Sankt Andreasberg is especially rich in habitats worthy of protection in within the Harz National Park, but also around the town in the form of Upper Harz mountain meadows. In the national park north-northwest of Sankt Andreasberg are the Dreibrodesteine (at ca. NN; ; ND GS 43), three outsize blocks of granite that have been formed by spheroidal weathering. According to legend they originated as the three loaves of bread of a heartless woman who would not help a starving miner. With the words Meine drei Brote sollen lieber zu Steinen werden (I'd rather my three loaves became stones) she spurned the miner, whereupon the loaves grew into giant stones and squashed the woman into the mossy earth. The granite blocks were considered a warning against heartlessness. At the Dreibrodesteine is checkpoint no. 154 (Dreibrodestein) in the Harzer Wandernadel hiking system and a memorial to the foresters and officials of the Andreasberg Forestry Office who fell in the two world wars.