Erg (landform) when liquid methane rained and eroded the ice bedrock, possibly in the form of flash floods. Alternatively, the sand could also have come from organic solids produced by photochemical reactions in Titan's atmosphere. Erg (landform) An erg (also sand sea or dune sea, or sand sheet if it lacks dunes) is a broad, flat area of desert covered with wind-swept sand with little or no vegetative cover. The term takes its name from the Arabic word "ʿarq" (), meaning "dune field". Strictly speaking, an erg is defined as a desert area that contains more than of aeolian or wind-blown sand
Erg Mountain Provincial Park weather is clear, the prominent Mount Sir Alexander is visible. Erg Mountain Provincial Park Erg Mountain Provincial Park is a provincial park in British Columbia, Canada. The park is spread over an area of 1011 hectares. In its interior parts, starting from the slopes of the valley above the Upper Fraser Trench, the park consists of cedar hemlock forests. From these forests the park continues on to higher altitudes, reaching the sub-alpine and alpine areas near the Erg Mountain. This mountain, which is an old hiking destination, is known for the magnificent vistas it offers of the Upper Fraser Valley