Coal and sand is used to create filters for the run-off from these structures.
These structures may be surrounded by smaller buildings known as buglis. The main use of these structures is preceded by a ceremony known as the geh sarnu, which includes a kind of ceremonial touching called paiwand. That is followed by an activity called Khurshed nigerishin, for which these structures are primarily designed. These structures are only entered by the nasellar, a special class of caretakers. Coal and sand is used to create filters for the run-off from these structures. The scriptural basis for these structures can be found in Fargard 5 of the Vendidad, which addresses purity. They typically have wells at their center, where bones are placed once they have been bleached by the sun. For ten points, name this structure on which Zoroastrians expose their dead to vultures.
These structures may be surrounded by smaller buildings known as buglis.
{Tower} of {Silence} [accept: {dakhma}, {dokhma}, {dakhmag}, {deme}, {dema}]