Cement cover over paper (mache) sculpture?

ok, this might sound as a stupid idea, but i was reading about Papercrete today which sounds fascinating and i will have a try on it.
But then this other weird idea came up to me.....i want to make something like a giant rock, and i thought perhaps instead of using papercrete, what if i made the whole giant rock with just paper pulp and then cover it up with cement so it could be waterproof ? is that possible?
please give me your thoughts

caitlinsdad2 years ago

Try this. It has held up through snow and rain so far.

https://www.instructables.com/id/Totoro-Papier-Machecrete-Garden-Statue/