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Wilderness
Abstract: This map layer consists of National Wilderness Preservation System areas of 640 acres or more, in the United States, Puerto Rico, and the U.S. Virgin Islands. The map... -
Frio 2 : Raw CASSM Datasets
This submission contains the raw SEG-2 seismic datasets acquired in the CASSM experiment, part of the Frio-2 GCS pilot. The directory also includes the log files generated by... -
Railroads
Abstract: This map layer includes railroads in the conterminous United States and Alaska. This is a replacement for the December 1998 map layer. Purpose: These data are intended... -
Federal Lands and Indian Reservations of the United States
Abstract: This map layer shows Indian lands of the United States. Only areas of 640 acres or more are included. Federally-administered lands within a reservation are included...