Nice article at the last leg of the usual summer vacation time. Though I am from Tamil Nadu, have visited most places in TN, AP, Kerala, Karnataka and Dehradun and Mussoorie in the North. Quite a few more places to see, thought provoking for future plans. Ooty and Kodaikanal are slowly losing their charm as the crowd, air and water pollution is peaking and making it a dirty place, especially during peak season times. Valparai would be a good addition to the list, Wayanad unfortunately is missed in the list, Thekkady/Idukki is another fabuluous spot, Kabini (Karnataka) is missed. I haven't been to Ahobilam, though it is a religious spot, it is also supposed to be a challenging hill terrain with falls, rivers, rivulets. Araku valley, Nagarjunasagar-Srisailam cruise is another interesting location. KERALA & KARNATAKA in my opinion tops the hill station beauty and biodiversity. Happy Holidaying