A team of Polish researchers has discovered a well which dates back to medieval times. It is located in the famous castle of Książ in Wałbrzych, Lower Silesia, Poland. Although they previously believed that it may have been a part of a system of tunnels created by Nazis, the real story of the well may be even more fascinating. According to Gazeta Wyborcza, the well was found under the floor of a tower discovered last July. It is quadrilateral and without any visible damages. One side of the well is 2.5 meters (8.2 ft.) wide, and it is about 50 meters (164 ft.) deep. The tower which covered the mysterious well was discovered while cleaning the road area near the
