Cast iron bathtub for garden pond (Wappingers)

I didn't use it the last two years, the paint is coming off. Easily fixed. I don't have a current pic of the inside (first three pics are from when I had it set up). Inside is "white" enamel but stained from years as a garden pond. But it was a fun garden pond and it can be again! IT's really heavy though, so you'll need at least two people to move it, and probably a van or truck. I got it when I had a Subaru Outback.
Also you need to dump it every year and start over, because if water freezes in there during the winter, the cast iron will crack (so I was told. I did dump it every year and start anew). I am getting older and just want less yardwork.