The most common and most likely answer to this crossword clue is the 5 plus 2 letter word ROUGH IT
I've seen this crossword clue in The Daily Telegraph
R
O
U
G
H
I
T
More clues leading to the result ROUGH IT
- Accept hardships hurt? I go crazy
- Backpack through Italy’s interior
- Take no comfort in organised riot — ugh!
- Camp trio huge all over the place apart from East
- Drunk or thug, one bound to live in harsh conditions
- Just the thing needed that’s crude first to live in basic conditions
- Live without normal comforts and basic technology
Buddy explains!

The straight part
We know that "Camp" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case camp = rough it.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.