It really helps if I put the link in...

I used High Space Galaxy Annual CA124 to make this. Starfinder has a deity that places drop nodes all over... so FTL isn't needed, your characters get in a ship, and go to another drop node anywhere in the galaxy. If only...

Not orcs in space, nor Warhammer 40K, its something else. Game is by Paizo.

This map shows a bit of conflict. One large area of influence was struck from outside... and decided the two near by areas were responsible. Now there are 4 dead worlds.

I think this is it for this part of the exit tunnel/cave.

5000 pixel jpg in my gallery.

exit tunnel/cave 5B

1. Officer of the Watch's quarters. 30' x 40' x 10'

  wood debris, but the bed and animal skin carpet are fairly new.

2. Old Guard Post. 40' x 60' x 12' Wood debris. Rock debris with a skeleton under each pile. Three nice condition beds with three nice carpets. Two tables with 3 chairs each.

3. The tunnel/cave. Rocks all over the floor.

4. encounter area. A fairey ring. Three large green toadstools. A 6 undead skeletons who are guarding the ring. A troll is hiding behind one of the green toadstools.

5. A trap room. 50' x 50' x 20' Three open pits and an opened chest. Skeletons in the open pits.

6. encounter area. Blue glowing toadstools, can be safely touched, but not edible. Give off a low level of light. Three giant beetles with green glowing mandibles.

7. Secret door into an angled passageway leads to a room with water as a floor. 90' x 30' x 10' also 30' deep. A chest is floating on the water, east end.

Added fungi. The green ones are next to a fairie ring. They are for the audience... so to speak.

The blue ones can be used for light.

Update. The nicely tiled room in the lower left is Officer of the Watch's quarters.

Note there are 4 nice looking beds, amongst the debris.

Look at all the gray rocks. Then two areas of brown rocks. Why, characters might think the brown rocks mark off secrets. But they would be wrong.

The interface of the cave and the passageway seems too obvious to me... looks like a door or something.