E25K was installed in 2016 as part of the temporary USArray project and integrated in 2020 into the permanent Alaska network as part of the National Science Foundation-sponsored Alaska Geophysics Arctic Observing Network project. UNAVCO generously shares resources at this site; its Network of the Americas GPS site AB46, formerly part of the Plate Boundary Observatory (PBO), is co-located here. E25K's equipment is hosted in the Arctic National Wildlife Refuge Visitor Center. Local partners have been very helpful troubleshooting data problems. Photo courtesy of Array Network Facility.