Was anyone in the area of Concrete or upriver from there tonight?

I was down fishing, and about 5:50 I heard the BIGGEST explosion I have ever heard.

VAAAAAAAAVVVVVOOOOOOOOOOOOOMMMMMM!!!!

I have been in thunderstorms in texas where the thunder clapped right on top of me...but it wasn't this loud. Sounded like the top of Sauk Mtn. was blowing off!

Guess it wasn't St. Helens, but a neighbor who lived here when St. Helens blew last time said that is what it sounded like.

Still don't know what it was...but it scared the heck oughta me. Only thing I can figure is the road construction crews blew off the side of a mtn. somewhere around Rockport or Marblemount. The boom echoed for a couple minutes, so I figure it was up the canyon a ways.

Mike