Why is plymouth rock important

The claim: Water level at Plymouth Rock proves sea level rise minimal since 1620

Some social media users are claiming the sea level at Plymouth Rock, a Massachusetts monument and fabled 1620 landing place of the Pilgrims, proves that sea-level rise is minimal or non-existent.

"This is Plymouth Rock.

It has lain here for 400 years," reads a July 4 Facebook post. "It was exposed to the oceans in 1620 & is in the exact same spot today. Oceans have failed to rise the few centimetres need (sic) to cover the rock with seawater.

This is a clear message about how little earth's oceans are rising." 

The post features a photo of Plymouth Rock, partially submerged by seawater at its current waterfront location at Pilgrim Memorial State Park in Plymouth, Massachusetts.

Fun facts about plymouth rock

The post was shared more than 1,000 times in four days.

But the post is wrong. Plymouth Rock cannot be used as an accurate gauge of area sea-level rise since 1620 because it was only placed in its current position in 1920, accor

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