My guess is that it was one of courses taught by S.N. Goenka. https://www.dhamma.org/en-US/index https://www.dhamma.org/en-US/index Please note that there are

My guess is that it was one of courses taught by S.N. Goenka. https://www.dhamma.org/en-US/index https://www.dhamma.org/en-US/index Please note that there are strong feelings about the way that his courses are taught (both positive and negative). I encourage you to investigate fully before committing. That said, many people have found his 10-day course to be very useful (I haven't participated in it). One final side note, there are other groups that offer vipassana retreats, and they're usually in the $1500 range for a 10-day retreat.