Anaconda folder. According to my observation (no official description can be found), there are various used versions of various packages and compressed packages. For example, with conda update pandas, it will be updated to the new version in Lib\ site-packages. But there are both new and old versions in pkgs. I speculate that conda first downloads the package to pkgs, decompresses it, and then updates the package that is officially used in site-packages. So can you delete the things in this pkgs? Can"t you save a lot of space if you delete it?