Laguna Dudú

Laguna Dudú is a sinkhole in the limestone near Cabrera where the roof collapsed to leave a pool of clear blue fresh water, connected underground to a second, roofed cave pool reached along a passage. The water is deep and cold. A zip line runs across the open lagoon and ends by dropping riders into it, which is the reason many people come. Divers work the underwater passages with permits. A second smaller lagoon on the same site is quieter than the main one, and the two are linked by a short path through the scrub above them.

What you actually see

• The open lagoon - the collapsed sinkhole with clear blue fresh water.
• The cave pool - the second, roofed pool connected underground.
• The zip line - the ride across the lagoon ending in the water.
• The underwater passages - the connected system worked by permitted divers.

When to go

Year round; the water temperature barely changes. Weekends are busy with local visitors. Midday light shows the colour best.

Honest expectations

The site is commercialised with an entry fee and extra charges for the zip line. It gets crowded and noisy at weekends. Cave diving requires certification and permission.

Nearby

Cabrera is nearby, and Río San Juan is west.