Prompt
"a somber and haunting landscape of the Killing Fields, with a vast expanse of open fields and a few scattered trees, in the background a mass grave or a memorial monument, with a gray and cloudy sky, evoking a sense of desolation, loss, and remembrance, in a realistic style, representing the Cambodian genocide, a tragic event of mass killings and human rights abuses that occurred in Cambodia from 1975 to 1979, under the regime of the Khmer Rouge."