ASPEN, Colo. — The U.S. Forest Service is launching a reservation system for overnight camping at a popular hot springs site south of Aspen. The Aspen Times reports camping permits at Conundrum Hot Springs for mid-April to the end of July will become available to reserve online starting Wednesday morning. Permits for August through November will be available to reserve in mid-June. Officials say 17 campsites will be available initially and three sites will be added during the summer.