We were talking about this last weekend and I've been curious about it.
Mark 2:4 (NIV)
Since they could not get him to Jesus because of the crowd, they made an opening in the roof above Jesus by digging through it and then lowered the mat the man was lying on.
What was the standard roofing material in the days of Jesus? Was this a thatch roof (so that "digging" was easy)? Or was this more like a wood/clay roof (so that digging was very difficult)?