📜 Narrow strait between Tullholmen and Kobben Islands, a protected cultural and historical site. 🔍 Features over 600 rock carvings by seamen dating back to the 15th century. Served as a safe haven for seamen, known as "Guest Book of the Archipelago". # Why Go 🌊 Witness centuries of maritime history through unique rock carvings 🏞️ Explore a scenic natural harbor where the Gulf of Finland meets the Baltic Sea 🚶‍♀️ Easy access via regular boat trips in summer or private transport # Why Avoid 👀 Markings are worn and not always easy to see despite cleaning efforts 🗓️ Regular trips only available in July and August, limited departures # Tips 💡 Check Hanko tourism website for booking and up-to-date information 🚗 Own transportation needed outside of July and August 🧼 Markings were cleaned and filled with dark color for visibility. # Hours 🕒 Regular trips only in July and August (limited departures); private tours available.