sentences:  It is known for the hundreds of thousands of bats that fly out from under the cliffs at sunset.The name "El Zotz" may have been chosen by Marco Antonio Bailey when he visited the site in 1977, with the name appearing on the map he produced.The site had previously been named "Dos Aguadas" (Two Springs) and Bailey may have changed the name to distinguish the site from other places in the region bearing the same name.