SMC Brown Cave
Url: https://i.imgur.com/xjlKeTd.png Transparent version: https://i.imgur.com/HMBTSbs.png
SMC Blue Ice Crystal Cave
Url: https://i.imgur.com/y25w0uV.png Transparent version: https://i.imgur.com/V1i2Fm7.png
SMC Red Mine Cave (blurry)
Url: https://i.imgur.com/Bux7DYZ.png (original by yokostar)