20 down: Large hole where bottom caught, with fundament in fact squeezed up. (6) -R-T-R
The 'large hole' could be a CRATER, but the rest of the clue is baffling.
Oops thank you. Only one more left now: 10a, C?N/?O?O?E
Ithink it’s 5 letter word fur us apartment beginning with c that I have at the beginning and is it a musical term? But if it is I can’t find it and where are the last few letters from?