Don't forget that, until the invention of refrigeration, people used to harvest ice in northern climates. They would store it in hay, and then sell it throughou

Don't forget that, until the invention of refrigeration, people used to harvest ice in northern climates. They would store it in hay, and then sell it throughout the year. Ice was even shipped internationally. (And, if you're a fan of Disney's Frozen, this is exactly what Sven did.)