Hidden high in the Agrafa mountains of Thessaly, Stefaniada Lake offers a rare freshwater altitude diving experience among submerged trees and dark, mysterious waters.
Dive Overview
Lake Stefaniada was formed in 1964 after a landslide blocked a mountain stream, creating what is considered the youngest natural lake in the Balkans.
Located at approximately 750 meters altitude and around 72 kilometers from Karditsa, the lake offers a unique but demanding dive environment.
The dive is recommended mainly for experienced divers due to the cold water, low visibility, remote access, and altitude diving considerations.
Unlike typical Mediterranean dives, Stefaniada provides an eerie freshwater atmosphere with submerged trees, dark waters, and almost no underwater relief to guide navigation.
Entry & Conditions
Access to the lake requires driving on rough dirt roads, making a 4×4 vehicle strongly recommended.
Divers should unload equipment as close to the shoreline as possible.
The shoreline is steep and uneven. During our dive, we secured a rope to a tree to assist the descent into the water while carrying heavy equipment.
Because the lake sits at 750 meters elevation, altitude diving procedures and dive planning adjustments are necessary.
Visibility is usually very limited, while water temperatures can become extremely cold during winter months.
What You’ll See
The underwater terrain is relatively featureless, allowing divers to follow whichever shoreline direction they prefer.
The real attraction of the dive lies in the submerged forest environment.
Below the surface, drowned trees emerge through the dark water creating a surreal atmosphere unlike most dives in Greece.
Visibility decreases rapidly with depth, and natural light fades significantly below approximately 8 meters.
Marine life is limited but includes freshwater crabs and small lake fish.
During our winter dive, water temperature reached approximately 8°C, limiting the dive time to around 30 minutes even while using drysuits.
Important Consideration
- Altitude diving procedures required
- Very low visibility
- Extremely cold water during winter
- Remote mountain access
- Drysuit strongly recommended in colder months
- Steep shoreline entry
Depth Profile
Although the lake exceeds recreational depths in some areas, visibility and light conditions generally limit practical exploration to shallower depths.
Tips for Divers
- Plan the dive using altitude diving tables or dive computer settings
- Bring at least one primary torch even for daytime dives
- Drysuit recommended outside summer months
- Use a rope or support line for safer entry and exit
- Stay close to your buddy due to low visibility
Why This Dive Stands Out
Stefaniada offers one of the rarest diving environments in Greece: a cold-water mountain lake dive through submerged trees in the youngest natural lake of the Balkans.
