Actún Can Caves
Serious budget travelers consider the Actún Kan Cave to be “walking distance” from Flores, but it’s about three kilometers in the sticky heat—you may want to hire a tuktuk (three-wheeled taxi) to the entrance instead. Ask for “las grutas.” There is a small entry fee.
Several Flores operators sell tours to Actún Kan; those that offer excursions to other area caves may tell you that Actún Kan is closed, collapsed, or off limits. It is almost certainly open, however, from 8am to 5pm daily. Note that while the cave has been wired for lighting in the past, it may not be working properly. Bring a flashlight. Allow one to two hours for the visit.
Nearby, the Jobitzinaj Caves are also open, but are as yet undeveloped for visitors. Ask at the entrance of Aktún Kan about a guide who can show you around.