2. When placing or seeking geocaches, I will: Not endanger myself or others Observe all laws & rules of the area Respect property rights and seek permission where appropriate Avoid causing disruptions or public alarm Minimize my and others' impact on the environment Be considerate of others Protect the integrity of the game pieces
10. Cache In Trash Out is an ongoing environmental initiative supported by the worldwide geocaching community. Since 2002, geocachers have been dedicated to cleaning up parks and other cache-friendly places around the world. Through these volunteer efforts, we help preserve the natural beauty of our outdoor resources! CACHE IN TRASH OUT
11. Letterboxing is similar to Geocaching, but you use a series of clues to find a container. Once you find the container (or letterbox), you use the carved stamp from the box, stamp your personal logbook and return that stamp to the letterbox. You then use your carved stamp and stamp the letterbox's logbook. LETTERBOXING
12. Waymarking.com provides tools for you to catalog, mark, and visit interesting and useful locations around the world. WAYMARKING
13. Using your GPS unit and/or written directions provided by NGS, which are available for review by the public, you can seek out NGS survey markers and other items that have been marked in the USA. At the top of peaks or in a village square, you probably walk by at least one every day. BENCHMARKHUNTING