Solve the Puzzle Mystery Cache

It should be obvious, but the big "question mark" that you see on the geocaching.com web map identifies ten caches that not only are puzzles but also five star (Terrain/Difficulty). These have been placed with the permission of Broward County Parks and Recreation.

Some of these caches, as well as waypoints, are located in Boaters Park, a 6.5-acre site that is accessible only by private boat. There is dockage for 35-40 boats. Within the park you will find picnic shelters, picnic tables, grills, and restrooms. Thus if you are so inclined, you can stay for several hours, enjoying the park and working on finding some/all of the caches.

The park does have limited hours that are as follows:

November 2, 2014 through March 7, 2015 8 a.m. to 6 p.m.

March 8, 2015 through October 31, 2015 8 a.m. to 7:30 p.m.

The park’s rules and regulations can be reviewed here.

So, here we go. This first cache is a relatively easy one in order to let you work up your skills. According to Wikipedia, the first, documented GPS-located cache was placed at:

A B C D . E F G north, and H J K L M . N O P west

Using the above information, the FINAL location for this cache can be found at this location:

and

In the Winter of 1804- 1805 the Lewis and Clark expedition arrived in NW North Dakota and over-wintered with the Mandan tribe. It was during this time that a young, female, Shoshone Indian named Sacajawea joined the expedition. She served as translator, peacemaker, caretaker and guide, thus making possible the historic journey of Lewis and Clark. Use the skills of Sacajawea in your search for the cache and log.

As a FTF award, the cache contains a gold coin commemorating Sacajawea. FTF can take it or leave it for STF or others.