A whole lot of coasters do rolls at very low levels. Volcano is one of the only coasetrs that do its rolls about 140 feet off the ground. It just brings the fright level up a few notches! On top of that, Volcano goes through these rolls fairly slowly. It really threatens to dump your loose articles. Going back to the beginning, there are the LIM launches. Unlike the majority of LIM launched rides, Volcano doesn't just let loose in the station. It starts off at a crawl. You then go around a turn to the left. The delicious anticipation comes in waiting for the train to get aligned again. Once it's all the way around the curve, the LIMs kick in! LIMs are so much cooler on inverts than normal sit downs in my opinion. The only problem with it, as Jeff said, is it's pretty short. Even so, it's very worth your wait.
Also, can anybody else think of coasters that do rolls really high? I'm sure there must be some out there but I can't seem to think of any...
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Veni, vidi, coasteri!
(2000 - PKD, Dollywood, SFA, BGW)