when traveling by train along the Badulla railway track in Sri Lanka, one can experience the thrill of having the train pass through railway tunnels; 43 of them are found along the Colombo-Badulla line. W Twenty-one of these railway tunnels belongs to the Badulla district in the Iva Province. In fact, in the line between the Ohiya and Ldalgashinna stations are to be found the highest number of railway tunnels between any two stations, in the world - 14 tunnels spanning a distance of 7 km. All of these railway tunnels are historical monuments in Sri Lanka and as such are categorized as technical archaeology- gy. The tunnels are all over 100 years old. These tunnels differ from each other in a number of aspects including length and height, as well as appearance. The tunnels were constructed without the help of modern machinery. Gunpowder was used to blast out the hole, after which the hollow was lined by square blocks of rocks and cement used to carve out the walls of the tunnels. The tunnels are also given a tunnel number which along with distances (in miles) from the Colombo Fort railway station to both the beginning and end of the tunnel are displayed on a board at the tunnel entrances. Tunnels 22 to 43 belong to the Badulla district in the Uva Province, located between the Ohiya and Badulla railway stations.