39D: Emperor, king and earl on gravel ridges (6) KEAS_R
I'm convinced these letters are correct but would have expected whatever the answer is to end in 'OSAR' for the gravel ridges...
51D: Grave with 500 bones (6) ST_R_A
My thinking is stern(a), but I can't see how 500 leads to 'A'
Many thanks for any help - these have been driving me crackers and I would have posted closer to Christmas but AnswerBank wouldn't let me reset my password. I gave up in the end and created a new account.