UK Metal Detectorist Targets Known Site: Finds Treasure, Gets Reward

A hoard of silver coins dating back to Roman times has been found in a village near Norwich, it has been revealed. A metal detector enthusiast unearthed the 26 silver coins, which were issued between 154BC and AD37. The precise location of the discovery is not being revealed in a bid to deter illegal treasure hunters. Norwich Castle Museum expert Adrian Marsden said more coins could still be hidden at the site, where two previous hoards have been found.

So the site of two groups of finds of national importance is not protected and we find it being targeted by more artefact hunters out to get their rewards? Why are not sites from which Treasure is reported not automatically protected by law?