Across
- 2. Egyptian structures aligned with the stars (7 letters)
- 3. Remote ocean point, farthest from land (4 letters)
- 4. Advanced civilization said to have built the pyramids (9 letters)
- 6. Legendary underwater city said to have sunk in a day (8 letters)
- 7. Ships and planes go missing here — spooky triangle (7 letters)
- 8. Unidentified flying object (3 letters)
Down
- 1. Theory that time isn't linear (7 letters)
- 3. Mysterious Scottish lake monster (4 letters)
- 5. Extinction event linked to an asteroid (10 letters)
- 6. Alien hotspot in Nevada (2 words, 4 + 2 letters)