Hmm, water related, there is the "Miner's Inch" for which the "unit cube"(block?) would be like 1" x 1" x ~2300 miles by my (fast, bad) calculations. https://

Hmm, water related, there is the "Miner's Inch" for which the "unit cube"(block?) would be like 1" x 1" x ~2300 miles by my (fast, bad) calculations. https://en.wikipedia.org/wiki/Miner%27s_inch https://en.wikipedia.org/wiki/Miner%27s_inch