The Wenatchee Dome is a large,

igneous intrusion In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth. Intrusions have a wide variety of forms and com ...

located on the southern end of Miller Street in

Wenatchee, Washington Wenatchee ( ) is the county seat and largest city of Chelan County, Washington, United States. The population within the city limits in 2010 was 31,925, and was estimated to have increased to 34,360 as of 2019. Located in the north-central part ...

. The Wenatchee Dome was the location of the Cannon-Asamera

gold mining Gold mining is the extraction of gold resources by mining. Historically, mining gold from alluvial deposits used manual separation processes, such as gold panning. However, with the expansion of gold mining to ores that are not on the surface ...

operation. The mine closed in the 1990s and all mining operations ended by 1994. The mine entrance on the north of the dome was sealed by

concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...

. Much of the mine activities included a strip mine in Dry Gulch to the southwest of the dome. The mining company worked to restore the area.

References

*Mason, Charles L., "The Geological History of the Wenatchee Valley and Adjacent Vicinity". Wenatchee: The World Publishing Company, 2006.
History of the Cannon Gold Mine
{{Coord, 47, 23, 46, N, 120, 19, 29, W, type:landmark_region:US-WA, display=title Rock formations of Washington (state) Geology of Washington (state)