Sianok Canyon is a steep Valley (Cliff) located in the border town of Bukittinggi, district Ampe' Koto, Regency Agam, West Sumatra. The Valley is elongated and winding as a city boundary of the southern canyon Koto Gadang until Six Ethnic Sianok Canyon, and ended up in Palupuh. Sianok Canyon has beautiful scenery and become one of the major tourist attraction in West Sumatera provinces.
The canyon is about 100 m which extends along 15 km with a width of approximately 200 m and is part of the fault that separates the island of Sumatra in half lengthwise (Fault Semangko). This fault forms a steep wall, even perpendicular and form a green valley - a result of decreased movement of the earth's crust (sinklinal) - which flows Sianok Rod (rod means river, in the Minangkabau language) that the water was crystal clear. In the Dutch colonial era, this gap also called buffalo sanget, because of the many free-living wild buffalo in the bottom of the gorge.
Sianok rod can now be forded by using canoes and kayaks that disaranai by water sports organization "Qurays". The route was taken from Lambah village to Sitingkai village Batang Palupuh for about 3.5 hours. On the outskirts there are many rare plants found as Rafflesia and medicinal plants. Fauna found in such long-tailed macaques, gibbons, hoop, deer, wild boar, leopard, and tapirs.