1.2 Altitude

• Coastal Sand Dunes can experience differing altitudes. Some of the world's most largest Sand Dunes are a few hundred meters in height.
• The average height of the sand dune system at Stockton Bight ranges from 15 to 20 metres above sea level. 
• Some of the larger sand dunes reach 30 to 40 metres above sea level. 
• However, between some of these high dunes are low lying areas known as swales. These sometimes fall below sea level by a few meters and they tend to have wetlands located in them.

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