Beautiful!!! I do have one concern: The wire mesh up against the tree for the plants to climb has sharp ends extending out where it had been cut to shape. Those need to be bent back with some pliers. Sulcatas behave like bulldozers, and eventually, Tonka will have an altercation with it. Also, I can't see whether or not it is securely mounted. I would frame it with either 2x4's or small logs (you can staple it to the frame) and then secure the top with wire wrapped around the tree trunk and stakes at the bottom corners to ensure that Tonka has no ability to move it.
I don't know if it would work for you, but we eventually discourage our young male sulcatas to not burrow by removing them from their initial digging spots, filling the hole back in, then covering it with a piece of smooth rock, or flagstone so they could no longer dig in that location. They were persistent for a few months, but so were we. Now (fully grown) they just dig shallow holes in corners to stay cool. I have no explanation as to why this worked, other than they each had a lovely shelter in which they could cool off, get out of the weather, (they are thermostatically controlled for heat in the winter) and spend the night if they want.
And I might note that I am jealous!!! You are lucky that you live in a climate where you can use tin to make their sight free walls! Here in Phoenix those would get so hot in the summer that it would cause burns. So we have cinder block on top of an 18" cement foundation all the way around, including under each gate and under the walls that separate each pen.
Enjoy your tortoise - they are real characters!
I don't know if it would work for you, but we eventually discourage our young male sulcatas to not burrow by removing them from their initial digging spots, filling the hole back in, then covering it with a piece of smooth rock, or flagstone so they could no longer dig in that location. They were persistent for a few months, but so were we. Now (fully grown) they just dig shallow holes in corners to stay cool. I have no explanation as to why this worked, other than they each had a lovely shelter in which they could cool off, get out of the weather, (they are thermostatically controlled for heat in the winter) and spend the night if they want.
And I might note that I am jealous!!! You are lucky that you live in a climate where you can use tin to make their sight free walls! Here in Phoenix those would get so hot in the summer that it would cause burns. So we have cinder block on top of an 18" cement foundation all the way around, including under each gate and under the walls that separate each pen.
Enjoy your tortoise - they are real characters!