This is the shocking aftermath of the devastating underwater volcano eruption that rocked the island nation of Tonga in the south Pacific.

The explosion happened on Saturday and this footage is from Monday (January 16) and the footage shows the total destruction that ensued afterward.

The eruption triggered a 1.2-meter tsunami wave and evacuation orders and much of the island remains uncontactable after communications were cut off.

"Heading to work for the first time after the calamity, had to help. You start to see more visibly the scale of the damage. Even the top of Mala'e Aloa wasn't spared and fences be it wood, plants, or brick cement just brushed away like it was nothing," the doctor wrote on Twitter.