In Muhammadieh, a precinct of Na'in, there are some man-made caves. Locals call them ''sardab'' and ''aba bafi''. Evidence shows that they were dug by the Zoroastrian inhabitants who used to live there because the cave entrances open to the east, where the sun rises. After they were abandoned by the Zoroastrians, Muslim inhabitants used them as loom workshops to weave cloaks and rugs, from two types of sheep and camel wools. Weaving cloaks by hand is one of the most valuable handicrafts and historical arts of Na'in. Some of the workshops are 700 years old. There is an ancient fort over the hill, 150 m away, with a small entrance at the back. There visitors can enjoy a beautiful perspective of the village and the desert around it.