sentences:  Some challenges to management systems like the one in place in this park are unclear roles, distrust, and poor communication, which has been seen in Sajama.The icy cap of Mount Sajama, Bolivia's highest point, has enabled a variety of scientific endeavors.The recovery of ice cores from the summit in 1998 offered a unique look at historic South American climactic and atmospheric conditions, and marked the first time that this information of this kind has been available for a location with a tropical latitude.