Wow. Fascinating…I want to see this place!
Re National Historic sites in Scotland and UK, the absence of barriers, stairs, etc. is pretty usual. At Dumbarton, my daughter noted, “There’s a very small, polite note as you enter, suggesting that Dumbarton Rock may not be suitable for disabled badge holders. These steps were steep.” And at Bothwell, she said, “This is the steepest staircase I’ve ever been on. No way they would have let you climb it in the States. They don’t seem to be as concerned about people falling to their deaths around here, which is nice, since they let you explore a bit more.”