What does the cryptic crossword clue "Tourists damaged this egress (10)" mean?

The definition is "Tourists". The wordplay uses an anagram. anagram of THIS + EGRESS = SIGHTSEERS; definition: "Tourists" The answer is SIGHTSEERS.

Tourists damaged this egress (10)

Daily Mail Cryptic #17416 | 2 Down | 2024-08-05 flower