The Aravalli Range is a range of mountains in western India running approximately 300 miles northeast-southwest across Rajasthan state. The northern end of the range continues as isolated hills and rocky ridges into Haryana state, ending near Delhi. The highest peak is Mount Abu. Rising to 5653 feet, it lies near the southwestern extremity of the range, close to the border with Gujarat. The city of Ajmer with its lake lies on the south slope of the range in Rajasthan. Rajasthan (राजस्‍थान) is the geographically largest state in northwestern India. ... Haryana (हरयाणा) is a state in northwest India. ... Delhi (दिल्ली or Dillī in Hindi and Bengali and دیلی in Urdu) is a term that refers to either the State of Delhi or the National Capital Territory (NCT) of the Republic of India. ... Mount Abu is the highest peak in the Aravalli Range of Rajasthan state, in western India. ... Gujarat (ગુજરાત in Gujarati) is the most industrialized state in India after Maharashtra and is located in western India, bordered by Pakistan to the northwest and Rajasthan to the north. ... Ajmer, or Ajmere, is a city in Indias Rajasthan state. ...

The Aravalli Range is the eroded stub of range of ancient folded mountains. The range rose in a Precambrian event called the Aravalli-Delhi orogen. The range joins two of the ancient segments that make up the Indian craton, the Marwar segment to the northwest of the range, and the Bundelkhand segment to the southeast. The Precambrian or Cryptozoic is the period of the geologic timescale from the formation of Earth around 4500 million years before the present (BP) to the evolution of abundant macroscopic hard-shelled fossils, which marked the beginning of the Cambrian, some 542 million years BP. Remarkably little is known about... A craton is an old and stable part of the continental crust that has survived the merging and splitting of continents and supercontinents for at least 500 million years. ...