I was watching a short video on Youtube where a guy on the Washington State side talks to the people on the BC side of the border. I went onto Google Maps and found the street in White Rock, BC, next to Blaine, WA. The odd thing that stood out was this walkway and the dog leash sign. I do believe you just can’t walk over the border to use this park, you must use one of the border crossing stations to enter either country.