The Old Timer's Mine is a window through time to the days of old. An original opal mine dating back to 1916. For some reason, still unknown to this day, some old time miners had back-filled the shafts, hiding the mine below. They never returned to dig up the opal. It wasn't until 1968 that the hidden mine was accidentally discovered when an underground home extension broke through, revealing the wealth of opal, which is still there for you to see today.