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.
This type of colorful mountains can be seen in several parts of East Azerbaijan province. One of the best and most accessible is the highway from Ahar to Tabriz and about 20 km from Tabriz.
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.
Various theories have been proposed for this phenomenon, the most likely of which is the increase in ground pressure due to the presence of hydrocarbon gases.
The end of this valley leads to a high and scary precipice, which is one of the attractions of this valley, and strange rocks can be seen with the perspective of this precipice and the turquoise beach.