备注：
已完结
片长：
60
剧情：
A mission to discover and re-create unexcavated worlds still hidden beneath the earth. Episodes include… S1E1 Fortress of the Knights Templar S1E2 Ghost City of the Pacific S1E3 El Dorado City of Gold S1E4 Stonehenge S1E5 Petra's Hidden Origins S1E6 Inca Island in the Sky