I recently returned from a trip to Yellowstone National Park. Yellowstone Park made international headlines the week prior after an elderly man was chased, and bucked by a bison, and survived a nasty 10-foot fall onto his side resulting in multiple broken bones. Our plan was to make it to at least Hayden Valley before turning around and heading back to the cabin. Get our free mobile appBison Roamed Freely Throughout The Hayden Valley In Yellowstone National Park On Saturday (July 18, 2026) And Cause A Massive Traffic JamYellowstone National Park bison causes traffic jam on July 18, 2026 Credit: Greg Jannetta Yellowstone National Park bison causes traffic jam on July 18, 2026 Credit: Greg JannettaI knew immediately as soon as I saw the brake lights coming around the corner into Hayden Valley that the bison were still up to their old tricks. READ MORE: WATCH: Grandfather Survives Seemingly Unprovoked Yellowstone Park Bison AttackI managed to get a few pictures of the playful bison wandering Hayden Valley while spending some time at the location, roughly 40 miles into the park from the west entrance.