Bigfoot Researchers Investigate Mount Si's Mysterious Cascade Mountain Site

Posted Friday, June 19, 2026

By Squatchable.com staff

There's something about old research sites that always pulls people back in, and a recent video from The Tall Ones channel dives deep into one of those forgotten places tucked beneath the slopes of Mount Si in Washington State. If you haven't seen it yet, do yourself a favor and check it out because it's packed with the kind of stories that keep you up at night. The video follows Tristan and Cosmo as they hike back into an abandoned research area that hasn't been active in years. At one point, cameras were watching these ridges and audio recorders were listening through the night, but the project ended and the forest slowly reclaimed it. What makes this location so compelling is its long history of reports, sightings, footprints, and unexplained sounds. The Snoqualmie and Cascade region has always been considered prime territory for Sasquatch activity, and this particular spot seems to be one of those meccas that keeps drawing people back decade after decade. One of the most intriguing parts of the video is when Tristan describes a plot watcher camera he had set up on a distant ridge. Most days it captured nothing, but one day something appeared far down near the bottom of the ridge, a dark figure moving quickly across the frame on all fours before vanishing. The image was distant and details were unclear, but it's the kind of footage that sticks with you. He also mentions a 17-inch print he found in the area and scratch marks on roots that don't match anything he or his mother made, and if it's not a bear, well, that's a mystery worth pondering. The audio evidence is equally fascinating. Tristan talks about voices captured on recorders that nobody heard in person, drifting through the forest despite no one being around for miles. Whether you call those EVPs or something else entirely, it's the kind of phenomenon that researchers have been documenting in these mountains for years. Cosmo also shares his own experiences with footprints found in remote locations and that unmistakable feeling that comes from spending enough time in wild places, that sense that there's more happening around you than you realize. What really got my attention was the mention of Bob Antone, described as a kind of historian around the Snoqualmie and North Bend area. Apparently he had a pretty intense encounter as a young kid, walking with friends at night and coming upon one sitting right in the trail in front of them. That kind of close encounter is exactly the type of story that gets passed down through generations and fuels ongoing research in the region. The video also touches on other hotspots in the area, including Tinkham Road and Mailbox Peak, which has become somewhat infamous for the number of rescue operations required to get people off the mountain. There's even discussion of tracks found near Tokul and the best times to investigate, which used to be during road construction when access was limited to weekends and four-wheel-drive vehicles. By the end of the hike, no fresh footprints were found and nothing extraordinary was captured on camera that day, but that's often how it goes in these investigations. The value isn't always in what you find, it's in the questions that remain. The stories, the experiences, the possibility that there are still things in these mountains that we don't fully understand. The forest of the Cascades remains as mysterious as ever, and for those of us who keep coming back, that's reason enough. The Tall Ones did a great job capturing the atmosphere of this place and the weight of its history. Definitely worth a watch if you're interested in the ongoing research happening in the Mount Si area.