Summary In the rainforest off of Guatemala's northern lowlands, ancient Maya sites and monuments follow the Pasión River. A group of archaeologists tracing water channels at the Maya site of Cancuen make a grisly discovery in a mud filled reservoir - hundreds of human bones. What happened here? Shalala, Oman is a port town home to frankincense trees, desert sands and mountains. A young drone photographer attempts to capture footage of the desert nearby and is astonished to find that this once arid region has suddenly transformed into a lush rainforest. How is that possible? Australia is usually associated with the dryness of the outback, but in Kuranda, Queensland there's a dense rainforest that is a popular camping attraction. When a large tree that interferes with tents on a campground is removed, something shocking is revealed ¬- giant bones. What animal do they belong to? Could they have discovered a dinosaur? Off the coast of southern Tanzania, the tiny Kilwa Island is a maze of mangroves, swamps and palm trees. On the northeast coast, huge blocks of stone protrude out of the greenery overlooking the Indian Ocean. Spanning across a hectare on this flat ground, it seems like someone went to great lengths to build this massive stone site. What is this place?

• Documentary