Educational Resources

photo of a park ranger talking to a group of children on the rim of crater lake
Crater Lake National Park, Oregon

NPS photo.

Investigating Volcanoes

Geology—Reading the Rocks

Geoheritage Connections

Geologic Heritage encompasses the significant geologic features, landforms, and landscapes characteristic of our Nation which are preserved for the full range of values that society places on them, including scientific, aesthetic, cultural, ecosystem, educational, recreational, tourism, and other values.

Geologic sites in your community or near your school are important because they provide insights into local and regional Earth history and processes. Undesignated geologic heritage sites near where people work, live, and play provide countless opportunities to touch nature and enjoy the outdoors.

Geology in Your Backyard

Geologic Concepts

Geoscience Education Partners

Site Index and Credits

[Site Under Development]

Volcanoes, Craters & Lava Flows [Home Page]

  1. Volcanic Necks and Plugs (Article)

  2. Volcanic Inverted Topography (Article)


Volcanoes, Craters & Lava Flows (2022) [Site Under Development]

Text by Allyson C. Mathis (geologist / science writer). Contributors: Tom Casadevall (USGS), Tim Connors (GRD), Ed Robeck (AGI), Vincent Santucci (GRD), Trista Thornberry-Ehrlich (CSU). Project lead / web development: Jim Wood (GRD).

Produced under a Cooperative Agreement for earth science education between the National Park Service's Geologic Resources Division and the American Geosciences Institute.

Citing pages from NPS websites:

National Park Service (Year, Month date—from "last update" at the bottom of the webpage). Page title—from the top of the webpage, but in sentence-case and italics. NPS.GOV. Https://—Use the full address of the webpage you're citing with no puncuation after the address


Last updated: December 12, 2022