## Prints for Sale

A collection of 4 posts

### [The USGS Cooperative National Geologic Map](/content/usgs-cooperative-national-geologic-map/index.html)
  
A new, colorful map from the USGS synthesizes decades of state and federal geologic surveys to create the most detailed visualization of the geology of the contiguous United States to date.

### [Aerial Glacier Photographs](/content/aerial-glacier-photographs/index.html)
  
A collection of 100,000 striking high-resolution aerial photos of glaciers, photographed over 40 years with a 63-pound WW II surveillance camera.

### [Mapping Volcano Eruptions With Drones](/content/mapping-volcano-eruptions-with-drones/index.html)
  
Drones have become an essential tool to map, measure and observe the extremely dangerous environments surrounding volcanic eruptions.

### [Mapping the Sea Floor](/content/mapping-the-sea-floor/index.html)
  
USGS research vessels equipped with cameras, sonar and scanners created a map of 125 square miles of the sea floor off Cape Ann, MA.