Situated at an elevation of 1428 m, this temple has a great following among childless couples. The temple houses a Shivling and is surrounded by the Himalayan ranges in the east, Haridwar in the west and Siddha Pith Medanpuri Devi temple in the south. Legends have it that a village woman inadvertently hit a Shivling while digging, divine voices were then heard, directing the people to construct a temple dedicated to Lord Shiva. Accordingly, the Koteshwar Mahadev temple was erected. It is believed that childless couples who chant the Mahamrityunjaya mantra (verse) during the whole month of Shravana with full faith and devotion are blessed by the Lord and their wishes are granted. It is also believed that during the Navratras the Goddess roves around, besitted upon her steed, the lion. Kotdwar is also known as the entrance towards Himalayas of Uttarakhand.