nubbsgalore: lightning illuminates an ash cloud that extends ten kilometres high in this june 5, 201
nubbsgalore: lightning illuminates an ash cloud that extends ten kilometres high in this june 5, 2011 eruption of puyehue volcano, near osorno in southern chile. known as a dirty thunderstorm, this phenomenon is yet to be explained by science, as the source of the lightning (or the specific mechanism by which particles of differing charges are separated in the ash cloud) continues to be debated. photos by (click pic) claudio santana, ivan alvarado, francisco negroni and carlos gutierrez. -- source link