brown river with melting water from the longyear glacier, running through the longyear valley. arctic landscape of

arctic bedrock brown climate clouds cloudy coal cold disappearing energy environment fossil freedom frost frozen geological geology glacial glacier gravel ice landscape limestone longyear longyearbyen longyeardalen melting meltwater minerals moraine mountain norway outdoors river rock rocky sedimentary sediments spitsbergen spitzbergen stones stream svalbard tundra valley water wilderness