Where a cemetery or graveyard has been used by the public as a place for burying the dead for 20 years or more and no part of said cemetery or graveyard is adjacent or contiguous to any public road or highway, any person who has, or any persons who have, relatives or relations buried in said cemetery or graveyard shall have the right to acquire and may acquire a convenient right-of-way, not exceeding in width 15 feet, over the lands intervening and lying between such cemetery or graveyard or body of land on which the same is situated and the public road or highway nearest or most convenient thereto.