The Prairie Sangha Network (Prairie Sangha of Champaign-Urbana, Plank Trail Sangha in Park Forest, Insight Chicago, and Peoria Insight Meditation Group) is a community of Buddhist practitioners of Vipassana (also referred to as Theravada, Insight, or Mindfulness Meditation) located in Illinois. Our founding teacher is Sandra Hammond, who has been a student of Vipassana since 1988 and is also a senior student of Ven. Tsoknyi Rinpoche III. ...You will be redirected to the general info page in 15 seconds.