Manzanar War Relocation Center Manzanar War Relocation Camp is a good place to stop and explore your way. Manzanar was a Japanese American internment camp located in the Owens Valley of California, USA. The camp was in operation from 1942 to 1945, during World War II, and was one of ten internment camps where Japanese Americans were forcibly relocated and incarcerated by the US government.The decision to establish internment camps was made by President Franklin D. Roosevelt after the Japanese attack on Pearl Harbor in December 1941. The government claimed that Japanese Americans, even those who were born in the…