Sidhpur is a sacred town, around 103 km. North of Ahmedabad, in Patan district, Gujarat. It is situated on the left bank of the River Saraswati. The town is a revered destination, flanked by temples, kunds, ashrams, and other sacred structures.
In Vedas, this modern-day Sidhpur is mentioned as ‘Shristhal’ or a ‘pious place’. Of India’s five most holy and ancient lakes is the Bindu Sarovar, which lies here in Sidhpur. According to the Hindu religion, it is said that as the obsequies offerings to the paternal ancestors must be made at Gaya, so corresponding offerings to the maternal ancestors have to be performed at Sidhpur. Thus Sidhpur has the importance of ‘Martu Gaya’ or ‘Matru Shraddh’, a place where people come annually to perform the rituals for their mothers who are in heavenly abode.
The Brahmins presided over these ceremonies and were treated with high regard. They are performed at Kapilamuni Ashram, where three sacred water kunds are present: the Gyan Vapika, Alpa Sarovar, and Bindu Sarovar. It is also said that Lord Parshuram performed ‘Matru Shraddh’ at the Bindu Sarovar and his temple is also created here for darshan (worship).
Every year the Sidhpur Camel Festival which is a traditional fair is held here during the Kartik month (the first month of the Hindu calendar) from the 11th day to the 15th day which is known as Karthika Poornima (full moon) at the banks of the Sabarmati River. It is a livestock fair in which the locals and tribals from surrounding towns & villages participate.
Raja Siddhraj built a magnificent temple dedicated to Lord Shiva called the ‘Rudra Mahalaya’ in the 12th century AD. The temple was an architectural wonder with a three-storeyed ‘shikhara’, 1600 pillars, 12 entrance doors, central ‘mandapa’ and porches on the east, north, and south, and a sanctum in the west. Around the temple, there were 11 shrines of Rudra. The eastern gate was adorned with beautifully carved ‘Toran’, with a flight of steps leading to the Saraswati River. However, the temple is now in ruins.
Source
http://www.gujarattourism.com/destination/details/6/59
http://www.sidhpurmatrugaya.com/
https://sudhagee.com/2015/03/09/travel-the-rudra-mahalaya-temple-at-sidhpur/#more-12528