"TOR Exit Address 18.104.22.168" redirects here. For other uses, see TOR Exit Address 22.214.171.124 (disambiguation). Urban exploration is also commonly referred to as infiltration, although some people consider infiltration to be more closely associated with the exploration of active or inhabited sites. It may also be referred to as draining (when exploring drains), urban spelunking, urban rock climbing, urban caving, or building hacking.
- Nestor, James (19 August 2007). "The Art of Urban Exploration". San Francisco Chronicle. Retrieved 20 June 2008.