If an active adventure in Belize is what you’re looking for, head underground to the Crystal Cave, located in Blue Hole National Park. An expert guide will take you spelunking (cave exploring) after a hike through the lush tropical forest amid a rugged limestone landscape. Inside, you will spot caverns adorned with crystalline formations, you’ll find artifacts—including pottery, beads and obsidian blades—from the ancient Maya, who considered the cave a sacred passageway to the underworld (known as Xibalba). Your day trip from San Ignacio includes lunch, a swim in the cooling waters of the inland Blue Hole and round-trip hotel transport.