Last one
7d Pink river entering blackstuff. It looks easy.
I have ? O? A?. I assume the definition is pink and I thought black stuff is tar.
Thanks for answer to 8 d in previous thread. I'd never have got that. Otherwise fairly easy.
Best to give the clue. It refers to the first across solution. The first word gives the first 4 letters of this; the second word gives the last 4 letters.