Mongabay reports that Washington-based environmental advocacy group Mighty Earth said it had detected 13 hectares (32 acres) of forest loss within the Martabe gold mining concession in North Sumatra province during 2021, which comes on top of the 100 hectares (247 acres) of deforestation detected there from 2016 to 2020.  through an Indonesian subsidiary. The mine, bought by a subsiary of U.K. conglomerate Jardine Matheson in 2018, is located inside the Batang Toru forest, the only known habitat of the critically endangered Tapanuli orangutan (Pongo tapanuliensis).