- - ground tremor
- - Dirt on one of the friends briefly leads to ground-breaking event
- - Cuts the ground under someone's feet - it's part of its faulty design perhaps
- - Ground-breaking, king size.
- - volcanic tremor
- - Massive smash coming up with ‘Shaking All Over'?
- - Strong tremor
- - 1974 Charlton Heston disaster movie in which Los Angeles is destroyed
- - Threat from a fault
- - Recipe that entails a lot of shaking (remember 56-Across)
- - Underground movement capable of bringing down Parliament and other institutions
- - Natural disaster
- - Catastrophic event
- - It could be catastrophic
- - Natural event
- - Californian's worry
- - Event in N Calif.: Oct. 17, 1989
- - S.F. headline of 1906
- - Seismograph find.
- - Capp's McGoon.
- - Seismologist's concern
- - Richter scale event
- - Temblor
- - Upheaval
- - Seismic disturbance
- - Disaster
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