The main attraction of this peaceful retreat, which is surrounded by plush greenery, is a huge Shivalinga. Measuring 108 ft (33 m), this shivalinga is tallest of its kind in the world and accompanying it is a 35 ft (11 m) tall Basava, surrounded by lakhs of small shivalingas spread over an area of 15 acres (61,000 m2). So far, around 100 lakh shivalingas have been installed. The entire project involves the installation of one crore shivalingas of various sizes, hence the name ‘Kotilingeshwara’.
Kotilingeshwara temple is approximately 6 km from KGF and 13 km Bangarapet on Bangarapet-Bethamangala road. Kotilingeshwara can be reached by road from Bangalore via Kolar, Bangarapet route.
http://thetalesofatraveler.com/day-trip-from-bangalore-to-kotilingeshwara-temple/
https://www.youtube.com/watch?v=P-VBMEVyyrc
https://en.wikipedia.org/wiki/Kotilingeshwara