JAKARTA — Nearly a year after what scientists describe as one of the most severe ecological shocks ever documented for the world’s rarest great ape species, there is still no coordinated recovery strategy for Tapanuli orangutans, even as mining resumes, future development plans remain active, and a strong El Niño introduces a new threat. That broader concern over the survival of the critically endangered Tapanuli orangutan (Pongo tapanuliensis) has been sharpened by recent satellite imagery showing fresh ground disturbances inside the concession for Indonesia’s Martabe gold mine, which overlaps with the ape’s habitat. Disputed disturbances The disturbances appeared as swaths of treeless and disturbed earth between June 13 and June 23 on steep rainforest hills around the Ramba Joring pit in Batang Toru, North Sumatra province, according to Planet satellite imagery reviewed by Mongabay. The area is part of an ecosystem that supports the largest known population of the Tapanuli orangutan. Researchers estimate that 716 Tapanuli orangutans remain in Batang Toru, with the population split across three increasingly fragmented subpopulations, leaving the species with little demographic margin for additional losses. A high-resolution AirBus image of the ground disturbance in Martabe gold mine in June 2026. Image courtesy of Mighty Earth. Mighty Earth, a U.S.-based environmental organization, describes the features as landslides associated with mine development. Agincourt Resources, which operates the Martabe mine, disputes that characterization, saying the June disturbance resulted from material movement following blasting carried out within its planned operational area. The blasting, the company said, was planned with…This article was originally published on Mongabay
