This is the amazing Cenote Ik Kil on the Yucatan Peninsula in Mexico. It is probably one the most photographed in Mexico and is hugely popular with tourists.
A cenote is a sinkhole and they are quite common in this area of Mexico though not are all open to the sky like Ik Kil. The ancient Mayans used it in ritual ceremonies and you can swim in this one. It is over 40 metres deep!
Getting here is easy. It’s a very popular day trip from Cancun and is usually included in tour packages when you go to see Chitzen Itza and Xelha. The stop doesn’t last long so try to get round and see it from lots of angles because it really is impressive. If you are feeling adventurous you could get a car rental and explore peninsula.