Ajahn Thongrat the teacher of Ajahn Chah and was a very close disciple of Phra Ajahn Mun Bhuridatto and Phra Ajahn Sao Kantasilo. Ajahn Thongrat was a unusual practitioner but very skilful in meditation. Phra Ajahn Mun send him always for a 1 or 2 years into the forest or caves to practice meditation. Ajahn Thongrat become an Arahant after 7 years under guidance of Phra Ajahn Mun. I found this Dhammatalk about Ajahn Thongrat of his way of practice and some experience told by Ajahn Pasanno. May it be also fruitful for you as it is for me, enjoy and success with your practice!
http://mirror1.birken.ca/dhamma_talks/i ... orldly.mp3