/proc/2/root/proc/self/root/proc/self/root/proc/thread-self
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
11:freezer:/10:hugetlb:/9:blkio:/8:devices:/7:memory:/6:perf_event:/5:cpuset:/4:pids:/3:net_cls,net_prio:/2:cpu,cpuacct:/1:name=systemd:/