I visited a cemetery yesterday and noticed that most of the rows of plots had double graves where husband and wife were buried next to each other. However, some of the rows had only men while the women were buried in a separate section across an "aisle". I.e., there were some rows for only men and across the aisle, a few rows for just women.
The plot belongs to a defunct shul, and the shul's president is now in his own plot, so I can't directly get an answer from him. Was there any minhag of some communities to have men and women buried separately in "single gender" areas? What was the reason for this?