In Guatemala, archaeologists identify an ancient site containing a series of unknown structures.

In Belize, researchers find a bizarre skeleton deep underground in a mysterious cave.

On the island of Madagascar, paleontologists discover an intact fossil unlike any known animal, living or extinct.

Size up a vast animal vertebra found in a Colombian coal mine and a set of ornate bone-filled jars in the Cambodian rainforest. Try to identify a rusty vehicle on a volcanic island in Pulau, then see if an Ecuadoran palm forest is moving by itself.

In the Philippines, archaeologists discover the remains of an ancient rhinoceros.

On the island of Pohnpei, explorers discover ancient structures hidden beneath dense vegetation.