310 (n)krakatoa Volcano Eruption-1883 A.d., Cracked One Foot Thick Concrete
At 300 Miles, Created A 3000 Foot Tidal Wave, Heard 3100 Miles Away,
Sound Pressure Caused Barometers To Fluctuate Wildly At 100 Miles
Indicating Levels Of At Least 170-190 Db (p) At This Distance Of 100 Miles
Even When Shouting In Someones Ear, Could Not Be Heard At 100 Miles
Caused Fog To Appear And Disappear Instantly At Hundreds Of Miles
Rocks Were Thrown To A Hieght Of 34 Miles. Dust And Debris Fell Continously For 10 Days After Blast. Produced Very Colorful Sunsets For One Year, Ejected 4 Cubic Miles Of
The Earth. Created Anti-node Of Negative Pressure At The Exact Opposite Side Of The Earth.sound Covered 1 / 10 Of The Worlds Surface, Shock (sound) Waves “echoed” Around The Earth 36 Times And Lasted For About A Month! -ref.19.