A brownish babbler, with strong bill and distinctive facial pattern. Upperparts, belly and crown are reddish brown, black "mask" with short and distinctive patch between bill and eyes, pale gray throat, and darker gray chest with very faint streaking. Endemic to primary and secondary forest on the limestone karst to the east of Meratus range in Borneo, previously only known from one specimen from the 19th century before being rediscovered in 2020. Found singly or pairs, not known to join mixed flocks. Creeps around in vines and undergrowth near cliffs, gleaning on leaves and exploring crevices for food. Vocalizations are loud, consisting of a repeated series of chattering notes up and down "chi-po-pyu", often in duet, the other individual responding "pyok pyok pyok" monotonously during the second half of the song.