Varieties of the mystical experience

There are a number of exotic meditation experiences and states which can happen. Mostly only people who go in for intensive, dedicated long term practice will encounter these things but an explanation of meditation is incomplete if they are not discussed.
In the video some reference is made of Carlos Castaneda and below are 2 YouTube links to interviews he gave in the 1960's. Quite interesting.
https://www.youtube.com/watch?v=l_qdZ1Ck_KA
https://www.youtube.com/watch?v=y2u_YxO5G8w