The main rationale for this belief is the soils brick-like hard quality with a reddish colour which is unique to this patch of land.

Some rocks and soil layers contain what some speculate to be remnants of an extreme heat (that can be caused by an event such as a meteor hit).

In several places, especially by the sea facing areas rocks and soil can be observed clearly having multiple layers usually with distinct colourization.

It can be also noticed that Ussangoda is located geographically closer to another archaeological site "Miniha Gal Kanda", where evidence for pre-historic human existence has been found.

[1] The objectives of establishing the new national park are providing long term protection for the area's biological, archaeological and geographical values.