The most common and most likely answer to this crossword clue is the 5 plus 5 letter word FIRST LIGHT
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More clues leading to the result FIRST LIGHT
- The earliest opportunity to see 1 across?
- Dawning, as the answer to this clue will be?
- Early period in 1 across?
- Trees closely packed around lake in the dawn
- Very early ancestors rubbed two sticks together for it
- Opening match in early morning
- Dawn French initially confused this girl with bit of teasing
- Trees densely packed around lake when dawn arrives
Buddy explains!

The straight part
We know that "The earliest opportunity" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case the earliest opportunity = first light.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.