Came across this chunk of iron about 1 1/2' down could be a pipe, but I am not aware of any pipes running there nor would it make any sense for drainage in that direction.
the last time I dug deep iron I unearthed a childs pedal car from around the 20's, you can check that out here guesses on what it is ? Think there is anything inside of it ?
Probably junk but I will dig it .....