a giant underwater sinkhole. Drink a piña colada on the beach or go hiking in the mountains. Tour Mayan ruins or see lots of underwater wildlife on a snorkeling expedition. Belize appeals to all ...

This iconic marine sinkhole measures over 300 meters ... farm and learning to make your own chocolate is a popular tour ...

Following is a transcript of the video. Narrator: There's a massive underwater sinkhole off the coast of Belize that extends 125 meters into the Earth's crust. It's called the Great Blue Hole.