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Sand
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Sand is a non-renewable resource over human timescales, and sand suitable for making concrete is in high demand. Desert sand, although plentiful, is not suitable for concrete. 50 billion tons of beach sand and fossil sand is used each year for construction. [https://en.wikipedia.org/wiki/Sand 1]
[[Zone|TurfzoesTurfzones]] with sand surface i sand is usually taken most easily by [[walking]] as the surface is usually difficult to traverse with [[Bicycle|bicycle]] and it usually forbidden for [[Car|cars]].
[[Category:Surface]]
[[sv: Sand]]