We also went to the Holy Vajra Yogini Pilgrimage sites to do special aspirational prayers. There are four very holy and sacred Vajra Yogini chapels. Each place we did special prayers, generated superior aspirations and did many offerings. David Lai & Paul were some of the people to join and he wrote notes and memorized what I explained on that trip and it became a book. Paul is from Kechara Discovery : http://kechara.com/discovery/
