The Double Pyramids of Bulgaria
There are many double pyramids in Bulgaria. The 2 summits are joined by a concourse. And one summit is slightly higher than the other. The design of the double pyramids
The pyramids of Bulgaria
Category: Pyramid
The Reservoirs of Perperikon
At the Pyramid of Perperikon there are at least 3 large rock-cut reservoirs. The reservoirs are cut clean inside the rock. One reservoir is located at the summit of the