(KCEN) -- A Dallas woman fell to her death while rock climbing at a gym.

It happened yesterday at the Summit Climbing Gym in Dallas.

Susan Mailloux fell from 30 feet up on the rock climbing wall.

She was airlifted to the hospital but later died.

Mailloux was an experienced climber and was climbing without supervision.

It appears Mailloux failed to attach to an auto restraining system installed at the gym.