Dumping/retrieval storage areas on tracks with conveyor inputs and outputs.
Storage area of large volumes of loose materials such as coal, ores, sand, etc.
See links for relevant images:
https://cdn.discordapp.com/attachments/888851931559260162/899065719491272704/image0.jpg
https://cdn.discordapp.com/attachments/888851931559260162/900384519645954108/16347387824966948454480843798114.jpg