What was common was smuggling! The populations of Anglos and Mexicans on either side of the border cooperated with each other often, and smuggling was simply a way of life. The old barracks was converted into the La Harmonia Store, which was damaged by a fire in 2019. I remember buying a water bottle and some candy there, but I sadly do not have any pictures of the store. But it looked like a post office out of an old western.
Castolon also displays the sheer biodiversity of the desert. Several of the older, standing buildings were off-limits due to safety, but a few of them had been turned into small museums, with tons of old pictures taken from times in Castolon’s history. I’ve always loved staring into old pictures, and standing where history has stood. But when I left that building after reading most of the pictures and captions, I stopped and looked out at the desert from the porch and saw a field of green.