The zipped GIS layers currently available in the Caribou Curriculum are presented below. All layers have been clipped to the extent of the Porcupine Caribou herd range. All raster layers are projected to UTM zone 6 with a WGS84 or NAD83 datum.  All shapefiles are unprojected with a NAD83 datum. Each layer has metadata associated with it in text, html and xml formats. 

aktopo0- 	A georeferenced tiff of the composite 1:250,000 USGS topo maps of Northeast Alaska 		(24.6 meg).
aktopo1-	A georeferenced tiff of the composite 1:250,000 USGS topo maps of Eastcentral 		Alaska (19.6 meg).
AkYk_border-A line shapefile of the Alaska-Yukon border. (20 kb)
ArcticRefuge-A polygon shapefile of the legislative boundary of the Arctic National Wildlife 		Refuge (1.5 meg). 
cantopo0-	A georeferenced tiff of the composite 1:250,000 Canadian topo maps of Northern 		Yukon (14.5 meg).
cantopo1-	A georeferenced tiff of the composite 1:250,000 Canadian topo maps of NorthCentral 		Yukon (15.1 meg).
Ccurriculum-All layers and tiffs in one zipped file (102.5 meg).
hillshade-	A georeferenced tiff of a gray-scale, hill shade relief map of Northeast Alaska and 		the Yukon (11 meg).
Lakes-	A polygon shapefile of lakes (881 kb).
Pch_area	A polygon shapefile of the Porcupine Caribou Herd range (49 kb).
pipeline	A line shapefile of the Tran-Alaska pipeline (64 kb).
Rivers	A line shapefile of the major rivers (801 kb).
Roads		Major highways (1 meg).
shadedrelief- A colored shaded relief map of the terrain (13.3 meg).
Villages	Populated places (12 kb).