Can Anyone Explain This?

I know Yoga, I saw Sub Yoga (see my post a few days ago), but what is this?
You need to see the staircase to know that it is nearly impossible to walk down like this.

[Maggiemae]

It must be good for you - crawling - leg and back muscles but I have to admit the bum muscles are strong here!

[Peggy C]

some kind of religion practice?

[kali]

they are going down? woah that seems like masochism to me

[Graeme Stevens]

Insanity. And I should know.

[Babs]

Maybe they've lost their contact lenses.

[Osia Strasner]

Is Godzilla at the top of the stairs?! Seems a little counter intuitive!

[Peter_1966]

?

[Krista Marson]

I was thinking it was a religious pilgrimage, but probably not!

[Margaret Obey]

Yikes!!!

[Paula McLaughlin]

They are crawling *down* the stairs? Looks difficult to me! A unique, and unusual capture, for sure!

[Yao RL]

@onewing haha Priceless!

[Kathie]

Not yet grasped the concept of walking upright.

[Catherine]

@onewing I'm with Babs on this one, Yao! You find very interesting and unusual things to photograph ... I'm enjoying seeing the world through your eyes

[Suse♡]

What? I have no explanations but thise most certainly look intriguing