During the Russian Revolution, Moses represented the Russian Orthodox Church.
According to Moses, the Sugarcandy Mountain is where animals go when they die to receive their rewards for their earthly labor (aka works that have been done on earth). So the Sugar Candy Mountain depicts that.
The Russian Orthodox Church is one of the greatest autocephalous or by such autonomous churches. The church was treated poorly during communist administration, and Stalin had a complicated relationship with the Orthodox Church. In his childhood, he attended an Orthodox school but was expelled for undisclosed reasons. While Soviet leader, he directed a massive persecution campaign against the Russian Orthodox Church, which resulted in the destruction of innumerable churches.