[Tilted Irish Kilt]

JimSEA :" If it’s basaltic lava flows as was the case with the Russian Traps, nothing would work."

I am not familiar with the geologic term "Russian Traps"
Can you explain ?

[Don W]

Trapps

[JimSEA]

Also referred to as the Siberian Traps. It extended over much of what is now central Siberia.