Chancellor Rivero visited the UP Mindanao Marilog-Arakan Land Reservation on February 5, 2011 on the occasion of "Araw ng Ladi-an", a sitio which is located in the farthest boundary of the Reservation. The 4,100-hectare Land Reservation is under the stewardship of UP Mindanao for research, extension and instruction purposes. The stewarship was assigned to UP Mindanao through Presidential Proclamation 1253 signed by Pres. Fidel V. Ramos in June 15, 1998. The other purposes stipulated under the said PP 1253 are "watershed and forest rehabilitation and protection, bio-diversity (flora and fauna) conservation, crops and livestock production and management including, upland communities training and development center".