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Marmara · Travel Guide

Dupnisa Cave

Dupnisa is a large underground system consisting of interconnected caves within the dense forest landscape of the Istranca Mountains. With its underground river, lakes, and rich stalactite and stalagmite formations, it is Thrace’s best-known cave route open to tourism.

KırklareliMarmaraCave
HIGHLIGHTS

Why Visit Dupnisa Cave?

Here are the key highlights and practical information to help you plan this stop.

01Interconnected multi-level cave system
02Underground river and lakes
03Rich speleothem formations
VISIT PLAN

What to Know Before You Go

Getting ThereIt is reached by road from central Kırklareli in the direction of Demirköy–Sarpdere; the sections of the cave open to visitors and seasonal conditions should be checked in advance.
Route TypeNature Tourism · Cave
LocationSarpdere / Demirköy / Kırklareli
Open in Maps ↗
The map is generated automatically from the attraction name and available location information. Check the route and access conditions before travelling.
EXPAND YOUR ROUTECombine your visit to Dupnisa Cave with İğneada Longoz Ormanları National Park / Kıyıköy in the same itinerary.
This guide was independently prepared for Left Lane Star Travel using information from Republic of Türkiye Ministry of Culture and Tourism – Türkiye Culture Portal. Opening hours, admission conditions and seasonal access may change; check the official source before travelling.Open Official Source ↗
Guide data last updated: 30.08.2026
Travel note: Opening hours, road conditions, fees and seasonal access may change. Check current official notices before departure.
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