How do you know it's calf height? Did I miss that in this classically drawn out prose? There's a picture with him leaning over a ~4 foot high ledge. That ledge wasn't it?
https://static.ffx.io/images/$zoom_0.188%2C$multiply_1.3545%...
https://static.ffx.io/images/$zoom_0.221%2C$multiply_2.7195%...