At first glance, the two gigantic craters in Didyma, Argolida, Greece, look like the result of a massive meteor striking Earth, but scientists speculate that these craters are actually fallen caves. The caves collapsed thousands of years ago, leaving large crater-like holes.
In the video you can take a look inside the craters. Two small Byzantine chapels with murals that date back to the 13th century are located within the smaller crater.
e MORFES 
Awesome video! Thanks for sharing!😍
La natura non finisce mai di stupirci
Crateri particolari che sarebbe bello poter osservare da vicino
Un saluto,silvia