Mazor Mausoleum  is one of the best preserved Roman buildings in Israel, located in El'ad. The Mausoleum, which is the only Roman era building in Israel to still stand from its foundations to its roof, was built for an important Roman man and his wife in the 3rd century AD. Their identities remain a mystery but one can still see the remnants of two sarcophagi in the mausoleum.

Muslims added a prayer niche in the southern wall, indicating the direction of Mecca, and the building became an Islamic holy place called Maqam en Neby Yahyah (Shrine of the prophet John). Due to its sacredness, the building was preserved through the ages.

Reaching the place: I walked from the junction of Elad on a dirt road which is the Israel National Trail. Keep in mind in winter, trail will be muddy after rain for days.

Cache is located south of the mausoleum in a dead end path which can serve as parking (if you know how to get here with a car?), next to the Israel National Trail markings. 

Although i think the INS continues on the long dirt path, and that rock was moved?