Sunday Crossword: 9/19/2021: National Parks?

[El Fiji Grande]

Title: National Parks?

 

[El Fiji Grande]

Web applet linked above. This one is a smaller 15x15 puzzle, so should be easier. Title is meant as a hint, and can be contained within some clues. Enjoy!

 

[Tringapore]

56 down is "Once".

62 down is "Pee".

66 across is "Otis".

 

[El Fiji Grande]

Spoiler: Solution