/proc/4/task/10/root/proc/4/root/proc/2/root/proc/4/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:memory:/9:hugetlb:/8:pids:/7:cpuset:/6:blkio:/5:cpu,cpuacct:/4:net_cls,net_prio:/3:perf_event:/2:devices:/1:name=systemd:/