All-terrain vehicles, or ATV's, tear up the rainforest soil and converting rudimentary roads into wide, muddy quagmires, impassable by any ordinary vehicle, including four-wheel drive trucks. Migrant Brazilian gold miners have set up an ATV taxi service between Bensdorp and the next village about 10 kilometers (6.2 miles) away through the rainforest for the price of one gram of pure gold or Euro 40. Gold, carried in waist pouches, is the preferred currency. Then Euros are favored hard currency because the rainforests of French Guiana right across the Marowijne River are part of the Euro zone, followed by the U.S. dollar and finally, begrudgingly the humble national currency, the Suriname dollar.