<prompt> Translate the following text to SwahiliThey measure 2 1.2 km 1 1.2 miles long, averaging 12 meters 40 feet in height, with 88 towers and an estimated 2,500 niches suitable for sentries or marksmen.  <response>: Mimea hiyo ina urefu wa kilomita 1.2 na urefu wa mita 12 na ina minara 88 na niches 2,500 zinazofaa kwa walinzi au wapiga risasi. 