Dungeon no Naka no Hito

There are a lot of dungeons where explorers went in search of them. An unexplored dungeon filled with monsters and traps where an explorer lost. Clay is a young girl who has excellent thief skills and her father gets lost in the dungeons. She went in search of him and reached the deepest part of those dungeons. After that, she gets a job with dungeon caretakers to search these dungeons. Now she can do both things together and also trap monsters.