Rovaniemi (pronunciation , Inari Sami: Ruávinjargâ, Northern Sami: Roavenjárga and Roavvenjárga, Skolt Sami: Ruäˊvnjargg) is the administrative capital and the centre of commerce of Finland's northernmost Province, Lapland. It is situated close to the Arctic Circle and between the hills of Ounasvaara and Korkalovaara, at the confluence of the Kemijoki River and its tributary, the Ounasjoki River. The city and the surrounding Rovaniemen maalaiskunta (Rural municipality of Rovaniemi) were merged into one on January 1, 2006. The new municipality has an area of 8,016 km² and an approximate population of 60,000. It is one of the largest cities in the world by area - though much of it is covered by forests. The word Rovaniemi has often been considered to be of Lappish origin, as "roavve" in Sami denotes a forested ridge or hill or the site of an old forest fire. In the dialects of southern Lapland, however, "rova" means a heap of stones, a rock or a group of rocks in a stretch of rapids, or even a sauna stove.