What are the best practices for mounting snapshots in linux?

These are snapshots of an iscsi volume that was initiated in LVM 2 in Red Hat 5 (or CentOS, if you like) as an ext3 volume. We have a customer that wants to be able to easily mount a snapshot to get at old files. A backup system would probably be used to mount a snapshot, so this helps get around issues involving having the "same" volume mounted twice on a system (which, incidentally, causes Windows XP Pro to hard crash if you use the MS iscsi initiator).