The most common and most likely answer to this crossword clue is the 8 letter word SURFACED
I've seen this crossword clue in The Daily Telegraph
S
U
R
F
A
C
E
D
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SURFACED mean?
SURFACED verb- To provide something with a surface.
- To apply a surface to something.
- To rise to the surface.
- To bring to the surface.
- To come out of hiding.
- For information or facts to become known.
- To make information or facts known.
- To work a mine near the surface.
- To appear or be found.
- (chiefly in combination) Having a (particular kind of) surface.