(3) Aravalli Explanation: Mount Abu is a popular hill station in the Aravalli Range in Sirohi district of Rajasthan near the border with Gujarat. The mountain forms a distinct rocky plateau. The highest peak on the mountain is Guru Shikhar at 1,722 m above sea level. It is referred to as 'an oasis in the desert' as its heights are home to rivers, lakes, waterfalls and evergreen forests.