Yamada Ryoun Roshi on Enlightenment Experiences

Yamada Ryoun Roshi speaks of awakening experiences, difference of depth and clarity in them and finally how "the whole wall collapses" and one becomes a buddha. This is exactly how we talk about progressing through the bhumis in Open Heart. 

See: http://openheartopenheart.blogspot.fi/2016/02/stages-of-spiritual-attainment.html