Are you familiar with Robert Monroe and the Monroe Explorers?
It is a fabulous piece of OBE history left for us – to reach out into—potentially further and further, as would all true Explorers. The idea came through to me recently to continue on, and/or even re-devise a recreation of the work.
You can : read about Robert Monroe here.
You can : read about the Explorer Project here.
You can : listen to the original 24 Explorer Series tapes here.