The special blackbamboo for the Angklung is harvested during the two weeks a year when the cicadas sing, and is cut at least three segments above the ground, to ensure the root continues to propagate.
Though it's pleasantly bisected by a faux running stream, with comfortable seating and towering embalmed trees (black olive, bamboo and Washingtonian palm) to gaze at, I saw no clients using it during my recent visit to the spa, perhaps because its location is a bit too public (all spa clients needing access to the changing rooms must walk around the atrium).
As you head up the mountains and the forest advances to the edge of the country roads, you can easily make out the ownership markings of individual bamboo trees written in black Chinese characters on their trunks.