:For the community in Cochrane District, Ontario, Canada, see: Calstock, Ontario
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Calstock Quay was once important for transporting goods, and in the Victorian era when steamers brought tourists to the village, Calstock was visited by Queen Victoria and Prince Albert in 1846.
The line was 7 miles 4 furlongs and 5 chains (12.17 km) long running from Kelly Bray to Calstock.
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The trade was limited by the difficulties of conveying the products to market; this was done by pack horse to Calstock, where there was a quay on the tidal River Tamar for onward coast-wise shipping transport.
Born Sheryll Hickman at Millbrook, Cornwall, to Cornish parents, her mother's family lived at Millbrook and her father's family originated from Calstock.
It flows northeast to Kabinakagami Lake, then heads north into Cochrane District, flows under Ontario Highway 11, and passes east of Calstock and the Constance Lake First Nation.