This is one of the more unusual spots, but if you have time, definitely worth a visit.
The hike begins in Collalbo/Klobenstein, the main village on the Corno del Renon mountain. The trail leads through Collalbo to Longomoso/Lengmoos until to the hiking trail no 24 in the Erdpyramidental valley.
For photographs I would suggest to visit on a moody, rainy, cloudy day. There is something about the rain that adds that element of mysteriousness and if you are lucky, you might get some low fog swirling among the pyramids.