Located around 65 km south of Surabaya. Gunung Arjuno (Mount Arjuno), one of the highest mountain in Java, is located inside this area.
Non-bird biodiversity: Trachypithecus auratus (Nijman 1997).
BirdLife International (2023) Important Bird Areas factsheet: Tahura R. Soerjo. Downloaded from http://www.birdlife.org on 26/01/2023.