i was about 20 miles away. . .the shaking lasted a full minute. i had a queasy feeling for about half an hour. . .whatever it was it was big. didn't feel like a 'normal' quake to me.
living hear 20+ years it was the longest lasting and biggest quake i've felt by far. . .usually i laugh it off. not really scared but i just had a really strange feeling in my gut. also, i was googling cavern point photos and found some interesting things. there is some level of plausibility to the presence of DUMBs in that area. . .just my opinion