Patrick Blanc observing the growth habits of mature tree crowns during the Canopy Raft, Radeau des Cimes expedition preparation, Phou Hin Poun NBCA, Khammouane, Laos, Jan. 2012
Patrick Blanc climbing in a tree to observe the growth habits of mature tree crowns during the Canopy Raft, Radeau des Cimes expedition preparation, Phou Hin Poun NBCA, Khammouane, Laos, Jan. 2012
Francis Hallé, Vichith Lamxay and Patrick Blanc, observing a karst species during the Radeau des Cimes, Canopy Raft expedition, Photo Laurent Pyot, Phou Hin Poun NBCA, Khammouane, Laos, May 2012