Alt Text Map of Dry Tortugas National Park in Florida. The base layer of the map is mostly open water rendered in shades of blue, with some lighter coloration for the small islands and coral reefs scattered throughout the park. Extended Description The park is enclosed with an angular, roughly oval outline but with a squared corner in the bottom left. The park boundary is marked with symbols and information, which will be listed after a description of the placement of the islands (called keys), features, and other points of interest within the park, most of which are accompanied by coordinates or other information. A circular inset map in the lower right corner will then be described before a full transcription of the legend. Within the Park Boundary Objects and keys make a relatively straight line across the middle of the park boundary. From west to east, these begin with Loggerhead Reef, which curves north to Texas Rock past Brilliant Shoal. Loggerhead Key, which has a lighthouse, protrudes from the reef near Windjammer wreck, which has a rock symbol near the sunken wreck. Loggerhead Key has the notation “Fl W20s 167ft 24M.” In the area between Loggerhead Key and the next, Garden Key, are White Shoal, buoy G “1,” green daymark “7,” green daymark “3,” and red daymark “4.” Daybeacon Middle Ground is north of Garden Key and red daymark “4” and Hospital Key, which is closed to the public, are northeast. A circle made of a dashed line is labeled “Research Natural Area Boundary” and a note reads, “see inset below right.” The final two islands in this row, Middle Key and East Key, are both closed to the public. Symbols for two sunken wrecks are near East Key, and symbols for rocks are south of both. Lighted buoy R “2” FL R4s is south of Middle Key, and Northkey Harbor is north of the pair. Further north and slightly east is Pulaski Shoal near a light marked “Fl W 6s 49ft 9M,” a symbol for a sunken wreck, and a note reading “Good Scuba Diving.” The Northwest Channel crosses the top left portion of the park boundary, into the Tortugas Ecological Reserve Tortugas North. Southwest Channel sweeps up toward Dry Tortugas in the lower left corner. The areas outside the boundary to the east and south are both marked Florida Keys National Marine Sanctuary. The Border The text at each buoy, which, when connected, together create the border of the Dry Tortugas National Park will now be transcribed. Buoy Y “J,” is at the top center. On the same horizontal trajectory, the next marker is a lighted buoy at 24 degrees 43 minutes 32 seconds North, 82 degrees 48 minutes 00 seconds West, Y “K,” Fl Y 6s. The next lighted buoy angles southeast and is marked 24 degrees 42 minutes 00 seconds North, 82 degrees 46 minutes, 00 seconds West, Y “L,” Fl Y 2.5s. Immediately south is the next lighted buoy Y “M,” FL Y4s, 24 degrees 40 minutes 00 seconds North, 82 degrees 46 minutes 00 seconds West. Now angling southwest are the buoy Y “N” and then a lighted buoy Y “O,” Fl Y 6s, 24 degrees 37 minutes 00 seconds North, 82 degrees 48 minutes 00 seconds W. Angling more sharply west southwest are buoy Y “P,” buoy Y “Q,” and lighted buoy Y “A,” Fl Y 2.5s, 24 degrees 34 minutes 00 seconds North, 82 degrees 54 minutes 00 seconds West.” Continuing directly west is buoy Y “B” and then lighted buoy 24 degrees 34 minutes 00 seconds, 82 degrees 58 minutes 00 seconds West, Y “C,” Fl Y 4s. Now angling north, the next buoy is W “C,” 24 degrees 36 minutes 00 seconds North, 82 degrees 58 minutes 00 seconds West. A dashed green line marked Research Natural Area Boundary moves east to just past Garden Key, where it turns ninety degrees north. The point where it turns is marked with a buoy W “B,” 24 degrees 36 minutes 00 seconds North, 82 degrees 51 minutes 00 seconds West. Where the vertical line meets the boundary is marked with a buoy, W “A,” 24 degrees 43 minutes 32 seconds North, 82 degrees 51 minutes 00 seconds West. Now moving the other way, the next point is a lighted buoy marked Y “I,” Fl Y 4s, 24 degrees 43 minutes 32 seconds North, 82 degrees, 52 minutes, 00 seconds West. The line angles slightly southwest to the next lighted buoy, Y “H,” Fl Y 2.5s, 24 degrees 43 minutes 00 seconds North, 82 degrees 54 minutes 00 seconds West. Angling more steeply southwest, the park boundary passes two buoys, Y “G” and “F.” The next change in direction of the park boundary is marked by a lighted buoy at Y “E,” Fl Y 6s, 24 degrees 39 minutes 00 seconds North, 82 degrees 58 minutes 00 seconds West. Finally, the park boundary continues south past buoy Y “D” to reach the buoy where the Research Natural Area Boundary extends horizontally to the right, thereby closing the circle. Inset Map A closer view of Garden Key shows Fort Jefferson on the island as well as Bush Key, a shoal, and Long Key, which is closed to the public, to the east. The space between these three keys is marked Tortugas anchorage. Just south of that anchorage are two trapezoidal areas outlined in black. The smaller section to the northeast is labeled “Nurse Shark Special Protection Zone (closed to public June through October).” The other trapezoid is the Coral Special Protection Zone, which is closed to the public and is about six times as big as the nurse shark protection zone. Bird Key anchorage is to the southwest near the Brick wreck, Bird Key Bank, and a note reading “Good Snorkeling.” Northeast of Bush Key is Iowa Rock and a light marked Fl G 4s 16ft 5M “3.” Red and green daymarks fill in some of the areas west and south of Garden Key. Red daymarks are labeled 2, 4, 6 (of which there are two), 8, 10, 12, and 2BK. Green daymarks are labeled 3, 7, 9, 11, 3BK, and 5BK. Legend Red text above the legend reads, “This map is an orientation aid for visitors to Dry Tortugas National Park. It should not be used in place of National Ocean Survey Chart 11438, which is indispensable for safe boating on these waters.” The legend reads as follows: Red triangle for Red daymark, Green square for Green daymark, White square for White daymark, White triangle for Daybeacon, White diamond shape for Buoy, White and red diamond shape for Lighted buoy, Red teardrop for Light, Lighthouse silhouette for Lighthouse, Yellow football shape for Sunken wreck, and Asterisk for Rock. Buoy characteristics are indicated with R for Red, G for Green, and Y for Yellow. Light characteristics for Fl for Flashing, W for White, R for Red, Y for Yellow, and s for Period (in seconds).