Official websites use .gov A .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites. National Park Service Search Exiting nps.gov Rate the Lesson Plan Field Trips Spring and Fall Field Trips Grade Level: Upper Elementary: Third Grade through Fifth Grade Subject: Math,Science,Social Studies Craters of the Moon is an exceptional area to study volcanic geology and the plants and animals native to Idaho's h