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.
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.
The distance of the rainbow valley from Hormoz is about 7 km, which can be covered in a short time by cars or motorbikes that are used to transport tourists
Gel-Afshan-e Chegardani-Lash is located near a village of the same name, which is necessary to visit with the help of local people due to the lack of traffic signs.