YELLOWSTONE

First US national park, 1872 (11)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 15,967 — 2021-07-09 23:00:00
  18A: First US national park, 1872 (11)
• Quick crossword No 15,247 — 2019-03-21 00:00:08
  6D: First US national park, 1872 (11)