What does the cryptic crossword clue "Huge heat unsettling Dutch city (3,5)" mean?

The definition is "Dutch city". The wordplay uses an anagram. anagram of HUGE + HEAT = THEHAGUE; definition: "Dutch city" The answer is THEHAGUE.

Huge heat unsettling Dutch city (3,5)

Daily Mail Cryptic #17188 | 20 Across | 2023-09-19 flower