Ciernie [ˈt͡ɕɛrɲɛ] is a village in the administrative district of Gmina Prostki, within Ełk County, Warmian-Masurian Voivodeship, in northern Poland.^[1] It lies approximately 10 kilometres (6 mi) west of Prostki, 17 km (11 mi) south of Ełk, and 119 km (74 mi) east of the regional capital Olsztyn.