NoC is referring to a five ton boulder that kinda sorta caught fire in my vicinity.
(The pillar of fire campfire I made did not ignite the rocks of our fire ring because they were metamorphic rock, not sulfur bearing stone or sedimentary stone. Thankfully.)
The five ton boulder?
Sulfur bearing stone.
Wow, we’d have a popular Cub Scouts program if you guys were around ... for a short time before they pulled our charter and sent some people to jail.