Since you haven't finished constructing your time machine here's an easy alternative to see the before and after of the Mt Saint Helens eruption. The Mt Saint Helens Candle and its holder. Cascadia Candle Co has taken historical topographical data from before the eruption and translated that into a highly accurate modern day model of Mt Saint Helens, cast in concrete. This model serves as the candle holder. The candle insert is an accurate recreation of the portion of the mountain that was ejected on May 18th 1980.