I made a crypt for interring my fallen colonists but found that colonist corpses not in a grave generate unhappy thoughts for the surviving colonists (unburied colonist). So how about having above-ground burial receptacles, made of stuff, that we could stick dead colonists in? Essentially they would be an above ground grave, or cryptosleep pod for the dead, but made of stone blocks, wood or gold etc.
Imagine having a crypt full of deceased colonists, with tales carved on their wood, stone or gold sarcophagi, sculptures guarding the crypt doors and places to put flowers.
