Sun Liquid Island!

The Sun Liquid Island was 100 meters in diameter and the volcano was at the very centre. Due to its nature, the Island has created a halo 10m away from itself, more like a boundary made of scorching heat.

Elias took that into account and he had even tested it multiple times when he moved close to the Island during his escapes from the beast's attack. 

He had used different spears made of a different metal to see how they fare. It was terrifying, as the moment the spear entered the Halo, at that very moment, it melted into a liquid.

He also had tried many substances and the one that lasted the longest was three seconds!

With the speed of the Island, crossing 10m will be instantaneous without delay, even if the Halo has forceful expulsion which apparently it didn't have.

All the beasts on the Tree Island were astonished that the Bipedal Idiot went to his death willingly and they were sad that the meat they wanted would be wasted for nothing.