They have been climbing mountains and sheltering in caves seeking physical isolation to aid them in their development of meditation and realization of the Dharma, which is the truth of the Buddha's Teaching.
Whether in solitude or in small groups, such monastics live a life of simplicity, austerity, and determined effort and have included some of the greatest meditation masters since the Buddha.
Far from cities and towns, willing to put up with the rigors and hardships of living in the wild for the opportunity to learn from Nature.
They are disinterested in worldly fame or recognition, these forest monastics often remain unknown, their life stories lost among the jungle thickets and mountain tops.
FILM: California monks: Fearless Mountain
Ajahn Tate passed away in 1994 at the age of 92.... Much of this is directed towards the ordinary rural villagers of Northeast Thailand (Issan), who are Ajahn Tate's own stock.
Although it is the poorest and most underdeveloped region in Thailand, its people are particularly devout Buddhists. And it is from them that most of the Thai meditation masters have arisen.