Across
- 3. The IRT Lexington Avenue Line was the first underground portion of this system opening in 1904
- 5. Civilization whose Long Count calendar sparked 2012 apocalypse theories and whose ruins overlook the sea at Tulum
- 7. Chocolate Timbit or Munchkin meets coffee in a Seinfeld-famous double-dip — in the NBA, Darryl Dawkins shattered two backboards doing one
- 8. Home to a tower with a number in its name and a famous night market called Shilin
- 10. The one-legged variation perfected by a 7-foot German who spent 21 seasons in Dallas
- 12. Neither victory nor defeat — the king has no legal squares but isn't under attack
- 14. Pack of blue-eyed sled dogs whose name graces arenas in both Storrs and Seattle
- 15. Underground freshwater pools accessed through collapsed karst bedrock across the Yucatan
Down
- 1. Named after a music hall song, this golf term was originally considered a good score in the 1890s
- 2. Cassava starch spheres suspended in a Taichung-born drink — shares a first name with the bounty hunter who raised Jango's unaltered clone
- 3. Triangular bone that PT students learn to assess for winging and dyskinesis
- 4. Thetis held her son by this while dipping him in the River Styx — its modern medical namesake has ended seasons for the Mamba and the Slim Reaper
- 5. Green jacket ceremony held each April along Rae's Creek and Amen Corner
- 6. Purdue athletes share their name with a cocktail — a shot dropped into a pint, ordered by the round
- 9. Cupertino's compass-icon application shipped in 2003 — shares its name with an African expedition
- 11. Gene Sarazen's famous "shot heard round the world" at the 1935 Masters was a double version of this — two strokes under par
- 13. In marketing the model tracking customers from awareness through conversion — the middle is where most drop off