....I was in Kansas City, walking around my old neighborhood.   On my way to my old house, I encountered an elevated interstate that had been put through the area at a later date.  Walking underneath the two elevated lanes, I saw that work crews were demolishing one of the elevated lanes, first using cranes to fracture the span by first lifting up, then allowing it to collapse.  I ducked back to the side under the span which was not being demolished, and went on uphill under the span while the work continued.  

As the other, parallel span started to settle, you could see the plastic flow of  piles of gravel embankment underneath, under intense pressure.  In fact it began flowing towards me and I quickened my pace.  But the space between the intact span and the rising ground decreased, and it became slower going - I had to crouch, finally crawl, just as a new flow of, sort of, urethane foam (like pipe insulation) began to ooze out. 

By this time I was wiggling on my stomach, almost in the open air.  But at the last a final, massive flow, little fingers of caulk - the type used to quick-fix masonry problems - oozed out, and I was engulfed.    At least I wasn't killed by Dryvit.    --Christopher