Less crowded than other parks in the area, LabnaHa restricts entrance to small guided groups. The 200-hectare (492 acre) complex includes three cenotes linked by eco paths through dense foliage. Two zip lines soar above the cenotes, and paths and boardwalks lead through underground caves with stalactites and stalagmites glowing in brief streams of sunlight. Claustrophobes beware: the enclosed caves may be more than you can handle. Swimming, snorkeling, kayaking, and canoeing are available in two caves; diving is also available for an extra fee. The LabnaHa team helps support small Maya communities in the area and includes the residents in park activities. Guides explain the Maya philosophy concerning the underworld and the deities during the tour. The whole experience lasts about five hours; at times, there are few people there and you actually feel like you’re exploring the unknown jungle beyond the tourism areas. Advance reservations are required.