Nirotharam is an arama (monastic garden or park) for nirodha (the end of suffering). Nirotharam is a women's monastic vipassana practice community outside the city of Chom Tong in the region of Chiang Mai in Northern Thailand. It is located in a reforested by Maechee Rung and her nuns years ago surrounded by orchards and the nearby mountain forests. It is not far from Doi Inthanon, the highest peaks in Thailand.
Phra Ajahn Nanthayani is the founder of the Nirotharam community. She is an eminent and skilled Dhamma teacher of many years.
Her community of nuns at Nirotharam developed over decades before she and several others nuns decided to go to Sri Lanka first for samaneri ordination, and then two years later, to be fully ordained as bhikkhunis.
These nuns were brave and faithful to go for full bhikkhuni ordination in Sri Lanka, as bhikkhuni ordination is not common for Thai women in these days, although the popularity of ordination is slowly increasing.
You can see a lovely series of three videos of Loung Mae Nanthayani and a group of the Nirotharam nuns samaneri pabbaja or "going forth" in Sri Lanka here.
Many women and girls come to Nirotharam to study Dhamma and practice meditation. Retreatants wear white and keep the eight uposatha precepts.
Women wishing to enter into monastic life may undertake the eight precepts or go forth as samaneris or novices with the bhikkhuni sangha.
There are meditation retreats at Nirotharam year round. Phra Ajahn Nanthayani teachings Dhamma from the Pali Canon and the vipassana meditation tradition also taught by Loung Por Tong of Wat Phrathat Si Chom Tong in the nearby countryside city of Chom Tong. This method of vipassana meditation was developed in Burma and is widely practiced in the Chiang Mai area.
Nirotharam bhikkhunis are an alms mendicant monastic community and live in kutis scattered nearby along paths through the trees. They go for pindapat (almsround) to their local village daily and study and practice the precepts of the Bhikkhuni Vinaya together as a sangha.