Really lovely to see this. Indigos are such a spectacular snake - one of our real gems here in N. America. I'd love to see these guys really establish a healthy presence. All through undergrad school I worked during the summers for The Peregrine Fund, helping raise and release young Peregrine Falcons back to the wild. It was incredibly fun, and so satisfying to be part of helping this beautiful bird come back from its endangered status. Though it ruined me for wildnerness camping. Camping for so long in quite isolated and sometimes extreme conditions may be fun for a few days, or a week or so, but it kinda gets rough after that.
Here's hoping these beautiful snakes do well and establish a stronger population in the wild.