Early this March I spent 2 days on gorgeous green mountains in Marin County. The Golden Gate Bridge winked from afar as my talented pal Elias Koch and I lugged gear up loamy hills, dodging cow patties step by step. Camelbak had brought us here to document the thrill of 2 young racers bounding gleefully on a track made custom for them. These hills are privately owned so the terrain was untouched and inviting, flush with soft earth to catch their tread. I hid mics against their chests and listened from nearby groves as they surged by rapturously. It was fun to be so intimately close to the action and to test the range of my wireless transmitters in wide open space. My only regret: The globs of cow shit that speckled my poor Sound Devices recorder :(