 Archaeologist Michael Smyth eases down a log shield Photographic Print 16 in. x 12 in. Unframed Framed / Mounted |  A biologist ascends Tawi Attair, a 200-meter deep sinkhole Photographic Print 18 in. x 24 in. Unframed Framed / Mounted |  A biologist observes the forest canopy by walking along a suspended walkway Photographic Print 18 in. x 24 in. Unframed Framed / Mounted |