The area is covered with mossy forest and limestone rock formation within the Quirino Protected Landscape.
RED Bambalan said there no inhabitants or community in the area and no traces of illegal activities found in the site and nearby areas as revealed by the ground investigating team who trekked for almost a week to reach the landslide exact location.
The investigating team is composed of personnel from the Community Environment and Natural Resources Offices of San Isidro in Isabela and Nagtipunan in Quirino; and local government units of San Agustin and Maddela towns.
The team also discovered bedrocks and boulders along the Sili Creek found at the foot of the incident area; and discolored flowing water from the top of the landslide site.
RED Bambalan said the DENR together with the Mines and Geosciences Bureau has scheduled aerial surveillance in coordination with proper authorities to ascertain the condition of the uppermost area of the mountain and determine what possibly caused the landslide incident. (OTB/TCB/with DENR 2/PIA Quirino)