These high places, which are known as the Dakhmeh (crypt) or tower of silence, exist in many parts of Yazd province. A circular space surrounded by high walls and small, block able entrances is one of the features of these crypts.
In the center of this circular space is a pit-shaped space where the bones are placed, known as the Ustodan. The use of these places was common until a few decades ago and was used by Zoroastrians. But now this method of burial is obsolete.