ARC-1990-A90-3004

Two mosaicked pieces of Magellan image strips display the area east of the Rhea Mons volcano on Venus. This image is centered at about 32.5 degrees north latitude and 286.6 degrees east longitude. The mosaic is 47 km (28 mi.) wide and 135 km (81 mi.) long. This region has been previously identified as 'tessera'from Earth-based radar (Arecibo) images. The center of the image is dominated by a network of intersection ridges and valleys. The radar-bright north-south trending features in this image range from 1 km (0.6 mi.) to 3 km (1.8 mi.) in length. The average spacing between these ridges is about 1.5 km (0.9 mi.). The dark patches at the top of the image are smooth surfaces and may be lava flows located in lowlands between the higher ridge and the valley terrain. This image is a mosaic of two orbits obtained in the first Magellan stations near Goldstone, CA and Canberra, Australia. The resolution of this image is approx. 120 meters (400 feet).