Shallow pools can still be seen around the quarries, but nothing compared to the deep waters of previous years. To deter jumpers from leaping off the 70 to 100 foot cliffs, police initially placed poles around the outskirts where people jumped. Made of wood, they quickly became waterlogged and fell only two feet below the murky surface, where dumped cars, shopping carts and other debris also gathered. This only increased the danger to quarry jumpers. But those days are gone.