Subline!!! 10/8/200710/8/2007 mike d. 0 Comment climbing, Features Here’s a bit of a video montage of us climbing our hearts out on Subline: a 5.10 or 5.11 at Main Cliff. It’s really pumpy and extremely fun. Climbing at Main Cliff in CT from mikedidonato on Vimeo. It was a wild day.