Kinda like the Wall Jump in Super Metroid. I suppose it is described at some point in the game, but given that you don't ever fall down in that pit, (which if you've played the first one know not to do) or if you don't happen across it, you'd probably never know it exists.

Its true I don't know if there's some explanation in the book that comes with the game, I have just about none of those.

That takes me back... to the days when the book was actually useful. When I chose not to use it for the challenge of figuring it out, rather than because there was no useful information inside.