Regarding 6d, yes. I think 19d is an error. I suspect that the clue originally read 'Secret stash remains under stone' and at some point it has been edited to save space, unfortunately in a way which has mucked it up.
I think 19d is an error. I suspect that the clue originally read 'Secret stash remains under stone' and at some point it has been edited to save space, unfortunately in a way which has mucked it up.