Quote Originally Posted by Johan Isaksson View Post
... the entire cave diving curriculum can be completed in the mines ...
It can be completed in a duck pond with lines and some dive-throughs as well. As I have already said which you apparently missed.

Quote Originally Posted by rddvet View Post
Other than the ladder, looks pretty "cavey" to me.
They edited to made it look more interesting. Almost all mines consist of mostly straight cut hallways to transport heavy duty machinery on even ground.