Amissiontodiscoverandre-createunexcavatedworldsstillhiddenbeneaththeearth.　　Episodesinclude…　　S1E1FortressoftheKnightsTemplar　　S1E2GhostCityofthePacific　　S1E3ElDoradoCityofGold　　S1E4Stonehenge　　S1E5Petra'sHiddenOrigins　　S1E6IncaIslandintheSky