Cozumel is an island that is standing at the eastern side of Mexico, opposite Playa del Carmen, in the western Caribbean Sea. It's the third largest island of Mexico. During Cozumel Carnival, taking place in for more than 140 years, the streets in San Miguel de Cozumel get quite busy with full of people.
Cenote Dos Ojos is located in the south of Playa Del Carmen and in the north of Tulum. It is standing at the eastern side of Mexico and belongs to the state of Quintana Roo. The exploration of Dos Ojos has begun in 1986 and it still goes on by fellow divers. The extension of this cave system is about 61 km/38 mi long.