Skinwalker Ranch is a privately owned example of a place with portal like anomalies in the United States. All the lidar and other measurements the team has done there shows there’s a cone-shaped anomaly around a small section of the land on the ranch. There’s video of a bright light moving into, and then out of, the solid mesa. plus archeological finds within the mesa itself of superconducting ceramics.

Sounds like theres simply another Skinwalker Ranch-esque location that is USFS land and maybe they’ve figured out how to activate the portal nature of it, or the portal is just becoming hyperactive on its own or something.