Patreon page. This is a small set of two caverns that are not connected.
When I make these caverns, unless I'm using them for a specific adventure, I usually do not put in things like entrances and features, leaving those decisions up to the GM.
I have been putting in some grids, but I haven't specified the distance. The GM could make them 5' or 5 yards/meters for all I care.
Click on this link or on the graphic below to go straight to the pertinent Patreon post.