We want to place a niche (columbarium) wall into a difficult site. The site is a historic cemetery in a difficult to access location. We currently only allow site purchases to people who already have family interred in the site. What restrictions might there be for the wall or what restrictions should be placed, on those who can use & access the site? Also has anyone had experience with installing a wall on a sloped site with direct vehicle acess not possible. Very limited access to get the wall into the site.