2. Little Falls: Class III rapid and popular campsite. Cautious paddlers carry their canoes around this 300-foot-long stretch of whitewater.

3. Loon Bay: Site of a fierce battle around 1700, between Passamaquoddies and invading Mohawks.

4. Grand Lake Flowage: Open water marked by scores of islands and peninsulas, created by large dam at Kellyland. Tricky navigation to reach Princeton.

5. Indian Township: One of two Passamaquoddy reservations in Washington County. Home to roughly 600 tribal members. Community centered at Peter Dana Point, named for a famous tribal governor.

6. Big Lake: Called Genesagenagum by the Passamaquoddies, this is Maine's 13th largest lake, roughly 16 square miles.

7. Grand Lake Stream: Protected salmon river and home to a vibrant fishing and hunting village. A massive tannery, which failed in the 1880s, sent animal hides around the world. Historic 3-mile canoe carry between Big and West Grand lakes and site of Indian rock carvings.

8. West Grand Lake: Called Witteguergaugum by the Passamaquoddies, this is Maine's eight largest lake, more than 23 square miles.

9. The Thoroughfare: Narrow connection between West Grand and Pocumcus Lake. Site of ancient battle between Passamaquoddy and invading Mohawks, now occupied by a rustic sporting camp.

10. The Pines: 113-year-old sporting lodge across from large fin-shaped rock jutting out of lake. Marks 1.2-mile canoe carry along roads from Sysladobsis Lake to Fourth Machias Lake, the so-called Sharkfin Portage.

11. Gassabias Portage: Rough 2-mile forest trail linking Fourth Machias Lake and Gassabias Lake. Historic Indian route, leading between the St. Croix and Penobscot watersheds. Now part of state land, the portage passes through a 150 year-old stand of red and white pine.

12. Nicatous Lake: Key water body that gave early travelers access to the St. Croix, Narraguagus, Machias and Union rivers. Nicatous means ''little fork.'' It actually refers to the nearby junction of Nicatous Stream and the Passadumkeag River, a decision point for Indian canoeists. That junction is now called Pistol Green.

13. Passadumkeag Mountain: 1,463-foot peak in Grand Falls Township. Recreation enthusiasts want to turn its 800-foot vertical drop into a ski area.

14. Scalp Rock: This place got its name from an event said to take place around 1800. Mohawks murdered two Indians women and left there bodies on a highly-visible ledge.

15. Cold Stream-Ayer Brook: Home to the rare Tomah mayfly, hundreds of acres of this wetland area are being protected by The Nature Conservancy.

16. Passadumkeag: Set where the river that bears its name meets the Penobscot, this town was an important lumber center in the days of log drives.