DOI Activities Initiatives   Healthy Forests Improving National Parks Water 2025 Cooperative Conservation Take Pride in America National Energy Plan Management Excellence Issues of Interest How do I?   Get a National Parks Pass? Trace Indian Ancestry? DOI Quick Facts DOI manages 507 million acres of surface land, or about one-fifth of the land in the U.S. DOI en Español For DOI Employees DOI DC Operating Status Select one DOI Federal Credit Union DOI University Employee Express Greening Interior National Business Center Support Our Troops Thrift Savings Plan DOI Jobs Teacher Resources Children's Pages Bureaus and Offices DOI Key Officials DOI History Webcams Old Faithful Mammoth Hot Springs Glacier National Park Grand Canyon Big Bend National Park Old Faithful webcam is one of several webcams available in National Parks.	Previous Improving Our National Parks Promoting Healthy Forests Improving Quality of Public Lands Protecting Endangered Species Managing Water in the West Promoting Public and Private Partnerships Improving Quality of Life for Indian Tribes & Island Communities Protecting Our Nations Treasures Promoting Sound Energy Policy Answering the President's Call to Service Encouraging Recreation on Public Lands Next Yellowstone National Park (MT/WY/ID) is replacing failing sewer systems and installing new sewer lines throughout the park to protect park resources and better serve visitors. Additional Photo Galleries (sorted by topic) Improving Our National Parks Promoting Healthy Forests Improving Quality of Public Lands Protecting Endangered Species and Wildlife Managing Water in the West Promoting Public and Private Partnerships Improving Quality of Life for Indian Tribes and Island Communities Protecting Our Nations Treasures Promoting Sound Energy Policy Answering the President's Call to Service Encouraging Recreation on Public Lands
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U.S. Department of the Interior 1849 C Street, NW Washington, DC 20240 webteam@ios.doi.gov Last Updated on 07/08/04