Cliff about 100 m inside the canyon that stretches along 15 km with a width of approximately 200 m and is part of the fault that separates a region into two parts (Fault Semangko). Fault is to form a steep wall, even perpendicular and form a green valley that result from down movement of the earth's crust (sinklinal).

Although some of the walls had collapsed by an earthquake in 2007, Canyon Sianok still interesting and exotic do not lose power. Even in that year also, canyon Sianok defined as the best tourism object (the best tourist attraction) on the award-Padang Tourism Award (PTA) 2007 at the Padang.

Valley River canyon flow Sianok Sianok quite clear. The river can be used for sports activities such as canoeing, rafting and kayaking. This river empties into the Indian Ocean.

On the banks of the river still found many rare plants such as Rafflesia flowers and medicinal plants. While in the woods in the valley of the canyon, there are few wild animals can still be found, such as: long-tailed monkeys, gibbons, hoop, deer, wild boar, leopard and tapirs.

Sianok canyon, located in the central town of High hill. In this city there is a comfortable hotel for a place to stay for tourists who come from out of town. Type of hotels ranging from cheap to very expensive rates. For the food problem of the tourists are pampered by a variety of different cuisine of Padang. Kapau Rice became one of the interesting menu for a try which was in Market Slope (in addition to Upper Market).

To reach this location, tourists can use a landline. From the city of Padang to High hill, the trip can be taken for about 2 hours trip using public transportation. After reached the town of High hill, the journey can be continued by using public transportation to the location Sianok canyon. To anticipate changing so that no car, tourists are encouraged to use the services of travel, personal car or rental car that can go straight to the location of a tourist attraction.