The rock climbing around Ermionida and generally the Argolis region is all on excellent solid grey limestone. The majority of the routes are single pitch sport climbing routes, though there are some trad climbing routes as well.
In Katafyki ravine there are more than 70 sport climbing routes and a handful of multi-pitch routes. Most of the routes were established around 2000-2001 from Jim Titt.
Recently and with the active involvement of the local climbing community, the need of easier and well protected multi-pitch routes arose and in April 2022, a new route was established and bolted by Vertical Art Greece.