Mikhail Bulgakov, one of the most famous Russian novelists of the 20th century (his most well known work is The Master and Margarita), is buried in Moscow's Novodevichy Cemetery in one of the graveyard's few simple graves. I suspect the Soviet Union in 1970 couldn't make up its mind as to whether or not Bulgakov deserved to be enshrined in Novodevichy, thus the simple tomb.
