In general, West Kalimantan land is low-lying and has hundreds of rivers are safe when navigable, slightly hilly which extend from west to east along the valley Kapuas and Natuna Sea / Strait Karimata. Most of the land area is a swampy mix of peat and mangrove forests. The land area is flanked by two mountain ranges, namely, Kalingkang Mountains in the North and the Schwaner Mountains in the south along the border with the province of Central Kalimantan. Judging from the soil texture, the majority of West Kalimantan's area consists of the soil type PMK (podsolic red-yellow), which covers an area of about 10.5 million hectares, or 17.28 per cent of the total area of 14.7 million hectares. Next, the ground OGH (organosol, gley and hummus) and the alluvial soil of about 2.0 million hectares, or 10.29 per cent sprawled across Dati II, but most likely in the coastal district.