The Original End
The Druids continued to plan their attacks on the Romans even after England and Wales had practically been subjugated to them. The Welsh island of Mona (now Anglesey), which served as both a sacred place for the Druids and a possible gathering place where raids were plotted, was taken by Suetonius Paulinus' forces in 57 AD. The Druids gathered their forces for a last-ditch defense because they were powerless to stop their advance.
The Druid forces were able to intimidate their adversaries, according to the Roman historian Tacitus, by having their priests execute rituals that left altars bloodied and by having priestesses prowl the rebel army while wielding firebrands. Massacring the Druids in a merciless manner without regard to their standing as warriors versus civilians, gender, or age, the Romans put an end to this terror.
Even the island's sacred oak forests were destroyed, and a castle was erected to ensure that the island would never serve as a Druid stronghold for the restoration of power. Even while it was brutal, it was effective since Druids were destroyed for ages.