I'm a Day Hiker. Here's How I Explored (and Endured) America's Remotest National Park for ...
The Alatna River—one of six National Wild and Scenic Rivers in Gates of the Arctic National Park and Preserve, the highest ...
Arctic Sea Ice21 小时
GLIMS Glacier Database, Version 1
GLIMS data can be downloaded into a number of GIS-compatible formats, including ESRI Shapefiles, MapInfo tables, Geographic Mark-up Language (GML), and Keyhole Mark-up Language (KML) suitable for ...