I’ve seen the remains of houses that had a gas explosion, there was very little left, other than a slab.
I was visiting someone when there was a gas explosion at house many many miles away. The house sort of shook, heard the explosion, thought it was a plane crashing. Sounded like it was close even though later we found it was miles away. All the neighbors came out and started looking around the streets and wondered if there was a terrorist attack with planes in the air