Mt. Rainier, Washington: NASA JPL image, P-44703, 10/03/94. Color composite radar image acquired by Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR). Radar imagery strongly emphasizes landscape topography and surface roughness. Mt. Rainier last erupted about 150 years ago; it is now covered with small glaciers and snow fields.