SAHARA

About 3,500,000 square miles of Africa (6)

Solution has appeared in 3 crosswords (1 across and 2 down):

• Quick crossword No 15,754 — 2020-11-03 00:00:40
  6D: African desert (6)
• Quick crossword No 15,498 — 2020-01-09 00:00:53
  7D: World's largest desert (6)
• Quick crossword No 15,398 — 2019-09-12 23:00:04
  15A: About 3,500,000 square miles of Africa (6)