17-Arizona Wave, USA
To visit this incredible place, tourists must walk for several hours in the desert.
These undulating surfaces are composed of Jurassic sand.
According to scientists, the age of the sand that makes up the waves is about 190 million years.
It may be hard to imagine, but in those distant times, when there were still no people on the land, that sand was part of the dunes.
The best season to visit the “Arisona Wave” is spring.