Khufu's pyramid was surrounded by an enclosure wall, with each segment in distance from the pyramid. On the eastern side, directly in front of the pyramid, Khufu's mortuary temple was built. Its foundation was made of black basalt, a great part of which is still preserved. Pillars and portals were made of red granite and the ceiling stones were of white limestone. Today nothing remains but the foundation. From the mortuary temple a causeway 0.43 miles long once connected to the valley temple. The valley temple was possibly made of the same stones as the mortuary temple, but since even the foundation is not preserved, the original form and size of the valley temple remain unknown.