pick up one's pace(This incident was very scary because I was alone with my dog. We were hiking the same section of Stone Mountain but a different trail called Wolf Rock. (...) Started getting an ominous feeling so started picking up my pace to head back. When I was about a mile from my car I heard what can only be described as a super sonic boom. It shook the ground and rattled the trees. It spooked me and my dog so bad we ran most of the way back to the car.mysteriousuniverse.orgART Vancouver)
