west area is flat to gently sloping (0-8%), reaching 71,956 ha, while the central and eastern regions which are wavy and hilly to very steep slopes (> 45%) with a total area of 129,352 ha. regions with a very steep slope (> 45%) are at the bukit barisan range with the summit of mount merapi with a height of 2,891 meters, and mount singgalang with a height of 2,877 meters, in the south and southeast of agam.