According to some estimates, there are 89 battle towers in Ingushetia. These towers with either flat or pyramid-shaped roofs were the tallest reaching some 30 meters high and having up to 6 floors. Good for watching the surrounding, sending out signals, aiming at the enemy on the ground below but very bad if an earthquake strikes. Such high structures were not stable at first but mother nature taught the masons how to build proper earthquake-resistant towers. They reinforced the second floor with a groin vault which served as a second foundation for the remaining upper floors.