A sign warns visitors that this portion of the Malheur National Wildlife refuge outside of Burns, Ore., is closed to the public Friday, Feb. 12, 2016. (AP Photo/Rebecca Boone)

‘Trench of human feces’ found near Malheur artifacts after Oregon occupation

Investigators at the Malheur National Wildlife Refuge discovered firearms, explosives, spoiled food and a trench of human feces since the oc…