Bosnians dug a tunnel during the war in Walter, when the connection between the city of Sarajevo and the airport was cut by Serbs, and military supplies and food could only be passed through the tunnel. Many people also escaped from Sarajevo through it, and now the entrance and exit have been converted into a tunnel museum, opening a 25-meter tunnel for visitors to experience. Higher 1.6 meters, wide 1 meter. The local tour guide brother is very serious, has been asking us "what questions to ask", then I directly asked - "where are you at war". He is more serious - "I was about 5 ⃣️ years old at that time, I didn't understand anything, I just knew to pick up the gun and fight. I saw the city’s great wounds.