Big Tree Camp is anchored by its Texas-quarried sandstone north wall. Rust-colored like the sandy soil, the wall appears to grow from the earth and acts as a wind break in winter months. Strips of clerestory windows peer over the stone and allow indirect light into the long one room deep dwelling. Specific portals in the wall give glimpses of the field to the north. Along the hallway on the left are gear driven louvers opening into the hallway. Photograph by Mark Menjivar