The ASTER instrument that was launched onboard NASA’s Terra spacecraft in December 1999 has an along-track stereoscopic capability using two telescopes in its near infrared spectral band to acquire data from nadir and backward views. Over 1.2 million scenes (level-1A products) acquired between March 2000 and August 2008 were used to generate the ASTER Global DEM (ASTGTM) collection.  For more information, please see the metadata link above.

This is a vector cached Base Map that is utilizing the most commonly used datasets that are publically available from the Government of the North West Territories and the Government of Canada. It has been rendered from 1:25,000,000 down to 1:1,000 scale

Transportation networks (transportation)The means and aids for conveying people and goods. For example, resources describing roads, airports and airstrips, shipping routes, tunnels, nautical charts, vehicle or vessel location, aeronautical charts, and railways.

Search Services: General place names, Populated Places and geonames

LOC - Locations and geodetic networks (location)Positional information and services. For example, resources describing addresses, geodetic networks, postal zones and services, control points, and place names.

IBL - Imagery, basemaps, and land cover (imageryBaseMapsEarthCover) Basemaps. For example, resources describing land cover, topographic maps, and classified and unclassified images

ENV - Environment and conservation (environment)Environmental resources, protection, and conservation. For example, resources describing pollution, waste storage and treatment, environmental impact assessment, environmental risk, and nature reserves. )

Elevation - Elevation derived product. For example such as Canvec Contours, NWT NTDB Contours, Spot Elevations and MVAP Contours

Administrative and political boundaries (boundaries) Legal land descriptions for the NWT.