However, when they looked out the window, they saw a massive hole in their backyard. The subsidence is so wide that it completely swallowed up their 44-foot swimming pool, and it’s so deep that ...

making it one of the most attractive options for adding a slide to the backyard swimming hole. Its twisting design minimizes the depth requirement for the pool deck to just 6 feet 8 inches.

GILBERT, AZ (AZFamily) — Brandon Mader says he simply can’t believe he has a beautiful backyard swimming pool ... in disbelief at a gaping cement hole for three long years.