Last year I bought another safe for the camp.
About 40" wide, same hgt and depth.
This is a Champion brand which is a very heavy safe also.
It was on my pickup laying flat on the back.
4 friends from a neiboring camp slid it off and onto a dolly and into the camp.
The door can be removed on most which helps.
Check with a tool rental about a pallet jack which will fit thru standard width doors.
My son moves very large stacks of plywood and dry lumber around in his shop with one of those as well as heavy machinery.
Regardless, it will require some substantial beef to get it done also.