Eric Jackson and his brother get some spring lines on Mt. Ritter! October 14th, 2015 | 0 Comments Tweet The Jackson Brothers have their own part in this year’s Transworld Snowboarding movie Origins. Eric Jackson and his brother John are Mammoth locals catching some spring lines hauling ass up (and down) Mount Ritter. Check out all of action here! Categories: Lib Tech, Media, TRUST MERVIN MFG.