ALEUTIANISLANDS
| Date | Clue |
|---|---|
| 2013-04-13 | Part of the Ring of Fire |
| 2012-02-03 | Discovery of Vitus Bering before his shipwreck |
| 2006-10-20 | Locale of more than 50 volcanoes |
| 2003-02-07 | Places for seals |
| 2001-07-07 | Unalaska and others |
| 2000-11-24 | Japanese attack site, June 1942 |