Stock photography, photos: Silica Mine by Candlelight Stock photos of Large section of tunnel in abandoned sand or silica mine, by candlelight and flash. The tunnel is roughly forty feet high and the visible section is about a quarter-mile in length. Difficult and dangerous to enter, the miles of tunnel serve as a hibernaculum for bats and a challenge to adventurous photographers. Photograph: © Michael Gilday Click for a larger image and more information Keywords associated with this stock photo: mine, tunnel, sand, silica, cave, candles, candlelight, exploration, underground, fantasy, adventure, industry, surreal, beauty, light