Criteria

1. At the top of a waterfall in the Lightless Hollow
2. Tucked in the Dwarven ruins south of Dark Moon Grotto
3. Near the outer walls of Greymoor Keep
4. Where a storm is brewing east of Dusktown
5. At the top of the Circle of Champions' tower
6. Close to Storm-Hawk's Altar near Solitude
7. Near Jarl Olfwenn's Hall
8. At a henge south of Morthal
9. By the Dragon's Belly
10. Near an altar close to Hunter's House
11. Within Labyrinthian's burial mound
12. Overlooking the crescent pool in Nchuthnkarst
13. Through the Frostvenom Spiders' nest in Chillwind Depths
14. Near the cliffside altar in Dragonhome
15. Among the crags of the Frozen Coast
16. By the Wispmother's pond in Midnight Barrow
17. On one of the highest precipices in the Shadowgreen
18. In a junk heap rotunda in the Scraps