Looking for Sulcata pool ideas

[Norm619]

I'm visually impaired so if I missed place this I'm sorry. Here is my situation. I am looking to purchase a ranch near Tucson, Arizona. The ranch i'm looking at has plenty of space. Already found a good design for a winter home for these guys outside. But I am struggling with finding a good design to set app a medium to large soaking pool for at least one adult Sulcata. Any ideas would be greatly appreciated. Right now I have a female who's 5 years old and about ready to be moved outside. So I want to make sure I can provide a good place for her.

 

[Yvonne G]

My sulcata was about 125lbs. I used the top of a garbage toter, sunk into the ground.