Yes, it is very similar to
/mnt and is designed to contain
nfs shared directories from remote hosts.
If there is a NFS server named
nfsserver sharing a directory named
shared-directory, you can access it just by listing or reading files in
This featured is provided by the automounter, was first implemented by Sun Microsystems in SunOS 4 (1988).
Unlike Linux, Solaris is documenting it in its file system hierarchy standard documentation:
$ man filesystem
Temporary mount point for file systems that are mounted
by the automounter.
Note that the /net directory is not hardcoded and you can select a different one by editing the
/etc/autofs/auto.master configuration file. See for example this documentation page.
Note also that the same mechanism can be used to automount CIFS or fuse based (e.g. sshfs) file systems shares. See this Gentoo wiki page or that Ubuntu documentation one.