El Eden Reserva Ecologica

Tours include transportation from Cancún, 1 or 2 nights of accommodation at La Savanna Research Station, meals, nightly cocktails, guided nature walks, and tours.

The tours cost $235 to $380, depending on the length of stay, plus $95 per extra night. American Express is accepted.

Contact Ecocolors, Camarón 32 SM 27 (tel. 998/884-3667; fax 998/884-9580; www.ecotravelmexico.com), which specializes in ecologically oriented tours around the Cancún area.