The Diamond Craters is a monogenetic volcanic field about 40 miles (64 km) southeast of Burns, Oregon.

The field consists of a 27-square-mile (70 km2) area of basaltic lava flows, cinder cones, and maars.

The reexamination of radiocarbon dates from older studies and interpretation of paleomagnetic data and new radiocarbon dates limits the eruption of volcanic vents in this volcanic field to the time period between 7320 and 7790 calendar years B.P.

[3][4] In the 1970s, Diamond Craters was a source of controversy between the Bureau of Land Management and commercial stonecutters who were illegally removing slabs of lava to sell as veneer for fireplaces, home exteriors, and chimneys.

[5] Geologists familiar with the area cited the craters' unusual research value, a "museum of basaltic volcanic features" apt to be destroyed by slab harvesting and associated heavy equipment.