Yesterday we drove as close as we could get to the border with Mexico. We were hoping to hike a trail to the beach, but unfortunately it was closed. We did see glimpses of the border wall and there were helicopters continuously circling the area from a nearby base. We ended up going north a few miles to Imperial Beach/Tijuana Wildlife Refuge and walking south until we couldn't stand the stench from the raw sewage that apparently flows into the ocean from Mexico. It was seriously an awful smell.