Salt domes can be seen in different parts of southern Iran. One of the important examples is Qeshm salt dome. Such salt domes can also be seen on the island of Hormuz.
Rainbow Cave is located in the southeastern part of the island, about 10 km from Hormoz. It is a bit difficult to reach, but it can be crossed by everyone with caution.
Martian mountains are the result of natural erosion on the sedimentary bed of this region. The type of soil and the animal remains in them are a good indication of the fact that once upon a time, this whole region was the sea.