TranscriptionYELL20627 Mammoth Campfire Circle. (Project M42-3) Setting of second log frame. June 1957. Haines 57-278; YELL20627 Mammoth Campfire Circle. (Project M-42-3) Placing treated plank to edge walkway (base of 6 of broken rock will receive gravel surface). June 1957. Haines 57-279; YELL20627 Mammoth Campfire Circle. (Project M42-3). Raising log frame with mobile crane for placing on foundation. June