San Elijo Lagoon Ecological Reserve is a pleasant walk beside a saltwater marsh area, along a trail filled with lush greenery. It is fairly flat until you venture upon Annie’s Canyon. What a delight working through this little slot canyon. It was so cool, more than I expect with a tight squeeze, twists and turns as you went up. Annie’s Canyon was different then other slot canyons I have been to. It was close quarters, just room for one at a time and it went up in elevation. Others slots I have been in where fairly flat, but this had a bit of a climb. The sign said strenuous, but I would not describe it that way. I with describe it as fun.