Actun Tunichil Muknal (Cave of the Stone Sepulchre) dubbed by National Geography as the top sacred cave to explore in the world; should be on your bucket list! Your journey starts from San Ignacio in air-conditioned comfort with a 45-minute drive until your arrival at the ranger outpost. Here, our guides will provide you with a helmet, headlamp, and life jacket if needed. When geared up, it’s now time to hike, wade and swim the sacrificial Mayan underworld of the ATM. There’s 3 river crossing and a 30-minute hike, which will bring you to an hourglass entrance. From here, the cave system spans approximately 3 miles with stalactites, stalagmites, jarring boulders and fresh water streams from a...