Sahyadri of Maharashtra & sea shore defines the Konkan. It starts from the river Par near Balsad of Gujarat up to the river Terekhol on Goa border.It is stretched to the length 750 k.m. Sanhyadri and sea shore associated with each other scientifically. You will find forts built at the junction of river and sea, & also nearby the origin of the river.The transportation of goods were carried through ships and boats.This transportation was tuned with the high and low tide timings.This trading was in operation since 2500 years right from Satavahana dynasty.