Harsidhhi, a contracted form or, at its very least, a form of "Harshad Amba" - The Happy Mother, is considered one of the aspect of Amba and Kalika, the Hindu Devi.
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Harshidhhi Mata Temple also known as Harshal Mata Temple located at a place called Miani, some 30 km away from Porbandar en route to Dwarka.