Guys walking around with their metal detectors.....

but this guy struck gold...

A guy in Australia decided to go searching for gold in a field people have been searching through for the last 162 years. 

He used a metal detector, kept at it . . . and on Wednesday, found a gold nugget that weighed TWELVE POUNDS. 

Since gold is currently more than $1,600 an ounce, his nugget is worth $300,000.