Kumbhalgarh fort the second most important fort of rajasthan is located 64 km from udaipur in rajasmand this unconquerable fortress is secured under the protection of the aravali ranges the fort was built by maharana rana kumbha in the 15th century the fortifications of the fort extend 36 kilometers in length and it is said to be the second longest wall in the world the first being the great wall of china