Mangal bhat puja is done to remove dosh in kundli because of Mangal dasha. Problems like mental , physical & financial may arise as of Mangal dosh in Kundli, For Boys & girls where the marriages are delayed due to Mangal dosh.
About the location:
Trimbakeshwar Shiva Temple is an ancient Hindu temple in the town of Trimbak,it is is one of the twelve Jyotirlingas, The origin of the sacred Godavari river is near Trimbak.The temple is located between three hills namely Brahmagiri, Nilagiri and Kalagiri. The temple has three lingams representing Lord Brahma, Lord Vishnu and Lord Shiva (Tridev).