Lone Rock Festival Calendar Add to Calendar Add to Timely Calendar Add to Google Add to Outlook Add to Apple Calendar Add to other calendar Export to XML When: April 18, 2015 @ 6:00 pm – April 20, 2015 @ 4:00 am 2015-04-18T18:00:00+00:00 2015-04-20T04:00:00+00:00 Where: Lone Rock School Stevensville MT MRBA Events Montana Rockies Bluegrass Association events