This video of Arahant Maha Boowa is very emotional and he sheds tears on describing his enlightening experience, which he says is the same as the one Buddha and other arahants experienced before. Still, he considers himself to be a mouse in front of Buddha.

It is interesting how he saw his countless past lives and he says corpse after corpse after corpse, he saw it. He did see that he was relocated to hell many times and also Brahma's realm, but he phrases all his aimless drifting rebirths in samsara as "corpse after corpse after corpse", that ultimately he says if he arranges those corpses it will cover the length and breadth of Thailand. Very strong monk/arahant!

There is one interesting catch in the beginning when he describes his experience of enlightenment.

The countless immeasurable radiance in chitta at one focal point, that he forgot himself and was attracted to that infinite radiance at the focal point in chitta from which self-identity arises. Then a maxim from Dhamma arises which is "Anatta", when he kills or goes beyond the delusion of being, the paradise, and hells, all crash down, it was all radiance. And Arahnt gets overwhelmed and starts sobbing on recollecting in even after 53 years (at 2002 recording). 

This delusion of self (anatta) is the avijja (ignorance) that binds the self to countless rebirths and roaming around with all afflictions and sorrow in this world.

Acharya's experience looks like he explained the atma (core-self) radiance and he went beyond it.

His experience of the crossing of self (Atma) also looks very close to how brahman effulgence (great ball of spiritual radiance where atma goes in, merges, and ejected out ) would look like. Then, a plane of sunyata or emptiness might have been revealed to him.

It was interesting how he described the atma and other experiences which followed.