Leave What You Find: Plants, Rocks and Historic Sites

A smooth stone from the creek. A bright feather on the path. A pinecone for the dashboard. A piece of pottery near an old wall. Campers pick things up because the objects are interesting, and one small piece feels harmless. The trouble is that thousands of campers make the same choice.

“Leave what you find” is the fourth Leave No Trace principle. This article explains what it covers: natural objects, plants, and cultural or historic items. You will see why the National Park Service (NPS) asks you to leave them, what the law says about artifacts, and what to do if you spot something old. It is a guide to the official advice, not legal advice. Rules differ by park, forest and state, so check with the local land manager.

Plants, rocks and other natural objects

NPS says to leave rocks, plants and other natural objects where you found them, and to avoid carrying non-native species from place to place. Its reasons are specific. Parks get over 300 million visits a year, so if everyone took something, the place would change. Every item removed also removes a piece of that place for the next visitor.

NPS also points out that natural objects do jobs:

Object	A job NPS describes
Rock	Slowly weathers into soil, shelters small animals and holds water in the soil
Flower	Feeds pollinators and may become seeds or fruit
Dead leaf or stick	Cover for amphibians, reptiles and insects, nesting material for birds, and nutrients for the soil
Pinecone	Carries seeds that animals spread
Feather	Nesting material for birds, and later nutrients for the soil
Empty nest	Shelter for insects, small mammals and other birds, and often reused

Some natural items are also protected by law. NPS gives two examples. The Bald and Golden Eagle Protection Act prohibits anyone without a permit from taking bald or golden eagles, including feathers, skulls, nests and eggs. The Migratory Bird Treaty Act protects listed migratory birds in a similar way. A feather you pick up may be protected, even if you cannot tell the bird.

There are exceptions. NPS says some items, such as berries, nuts, firewood or unoccupied seashells, may be gathered in certain areas and in certain quantities. The place to check is the park’s Superintendent’s Compendium, which is often online, or you can ask a ranger. NPS adds: when in doubt, leave it be.

Two more habits come from the Leave No Trace page: do not build structures or furniture, and do not dig trenches at your campsite. For firewood, read firewood rules at campgrounds.

Historic sites and artifacts

NPS asks you to examine and photograph cultural and historic structures and artifacts, but not touch them. The Bureau of Land Management (BLM) gives similar advice in its “Visit with Respect” summary. These points come from BLM:

Leave all artifacts. BLM includes bullets, buttons and tools from early explorers and settlers, and Native American pottery, stone tools, rock flakes and corn cobs. They may look like trash, but BLM says it is illegal to remove any artifact, including historic refuse, from public lands.
Stay off structures. Do not touch, lean, stand or climb on historic or prehistoric structures, no matter how solid they look.
Guide children. BLM says archaeological sites are not playgrounds.
Mind your dog. Pets are not allowed in archaeological sites, to prevent digging and erosion. Where pets are allowed, keep them leashed near cultural resources.
Do not touch rock art. BLM says oils from your hands damage these images, and adding your own is vandalism.

If you find an artifact, NPS gives three steps: leave it where it is without moving it, document the location with a photo of the artifact in place and one with a landmark, and alert a ranger. If you cannot find a ranger, use the “Contact Us” link on the park website.

What the law says

NPS says leaving what you find is not only good manners. It is also the law, especially on federal lands.

The main law for artifacts is the Archaeological Resources Protection Act (ARPA), signed in 1979. NPS says it protects archaeological resources and sites on public lands and Indian lands. Digging up or trafficking in them carries a potential penalty of up to two years in prison, along with fines and supervised release. The law requires a permit for archaeological investigation.

You cannot judge by looks. NPS explains that the law uses 100 years as part of its definition of an archaeological resource, but disturbing a site without a permit is a violation whether or not the site ends up being 100 years old. Fossils fall under other laws NPS lists, such as the Paleontological Resources Preservation Act.

NPS lists more laws, including the Antiquities Act of 1906 and the National Historic Preservation Act, and its own park regulations. You do not need to know them by heart. You need to know that the safe default is to leave everything where it is. If you plan to camp on BLM-managed land, read dispersed camping on BLM land first.

What to take home instead

NPS suggests ways to enjoy what you find without taking it:

A camera, with photos of each find and a landmark in the frame
A field guide to identify flowers, plants and mushrooms
A nature journal for notes and sketches
A photo scavenger hunt list for kids

These ideas work well with children. The camping with kids guide has more ways to keep young campers busy at camp.

Common mistakes

Taking “just one.” Parks have many visits each year, so small takings add up.
Treating old objects as trash. BLM says historic refuse counts as an artifact.
Climbing on old walls for a photo. BLM asks you to stay off structures.
Assuming a feather or nest is fair game. Some are protected by law.
Moving an artifact to a “safer” spot. NPS says not to move it in any way. Leave it in place and tell a ranger.
Using a rule from another park. Check this park’s Compendium.

Frequently asked questions

Can you take a rock from a campground?

Usually no. NPS says to leave rocks and other natural objects where you find them. Some places allow limited gathering of certain items, so check the Compendium or ask a ranger.

Can you pick wildflowers or berries?

NPS says to leave plants where you found them. It also says some items, such as berries and nuts, may be gathered in certain areas and quantities. Look up the local rule before you pick.

What if you find an arrowhead or pottery?

Do not pick it up. Leave it in place, take photos, note the location, and tell a ranger. BLM says removing artifacts from public lands is illegal.

Does this apply to state parks and national forests?

The principle applies everywhere, but laws and rules differ by land manager. Check the park or forest page and ask staff.

Next step: add a “leave it” rule to your plan

Write one line in your Planner: where you will check the local rules for collecting, and what you will do instead of collecting, such as taking photos. Share it with everyone in your group before the trip.