Letterboxing is an intriguing “treasure hunt” style outdoor activity. Letterboxers hide small, weatherproof boxes in publicly-accessible places (like parks) and post clues to finding the box online on one of several Web sites. However, clues to finding some of the most highly-sought boxes are passed around by word of mouth.

There are about 60,000 active letterboxes listed on LbNA alone. Individual letterboxes usually contain a log book, an often hand-carved rubber stamp and occasionally contain an ink pad. Finders make an imprint of the letterbox’s stamp on their personal log book, and leave an imprint of their personal stamp on the letterbox’s logbook.

1. Limestone Lark San Marcos, TX
2. Karst Kite San Marcos, TX
3. Salt of the Earth ???, MA
4. Deviled Leg! ???, MA
5. 🤫Shhh . . IT Happens! ???, MA
6. The Artist Colony ???, MA (5)
7. Holy Cowch! ???, MA
8. 🤫Shhh . . IT Happens! ???, MA
9. cutting corners ???, MA
10. Smith's Little Island ???, MA
11. A CROSSWORK ORANGE - Now With 50% Fewer Errors!! ???, MA
12. The Joshua Tree ???, CA

More new letterboxes

1. Climax Canyon Raton, NM
2. Hoist The Colors Irwindale, CA
3. Maeveen Behan Desert Sanctuary Tucson, AZ (3/5)
4. Texas Alexander Richards, TX
5. Housatonic Rail Trail North Monroe, CT
6. "Q"uiet On The Set 4 Hamden, CT (3/3)
7. Q-Series North Haven to Prospect, CT (4/24)
8. Watson Falls Fox Toketee Falls, OR
9. West Rock Ridge State Park New Haven, CT
10. SKY 2015: West Rock Ridge State Park New Haven, CT
11. RIDDLES IN THE DARK - the fifth Hamden, CT
12. Blue Butterfly Hamden, CT

Did you know that it’s really easy to embed a video in an LbNA clue? Simply create your video and upload it to youtube. Once it’s there, click on Share then Embed, copy the code that it provides, and then paste that into the letterbox clue area on LbNA. Done!