A video shows two men toppling rock formations at Lake Mead trail
The National Park Service is seeking the public's help in identifying the two men, caught on video pushing rocks off a cliff near..
NPR
The National Park Service (NPS) is an agency of the United States federal government, within the U.S. Department of the Interior. The service manages all national parks; most national monuments; and other natural, historical, and recreational properties, with various title designations. The United States Congress created the agency on August 25, 1916, through the National Park Service Organic Act. Its headquarters are in Washington, D.C., within the main headquarters of the Department of the Interior.
The National Park Service is seeking the public's help in identifying the two men, caught on video pushing rocks off a cliff near..