<P> Unlike beaches elsewhere that are made up mostly of pulverized coral , Siesta Beach 's sand is 99 % quartz , most of which comes from the Appalachian Mountains . Even on the hottest days , the sand is so reflective that it feels cool underfoot . It 's estimated that the sand on Siesta Beach and Crescent Beach on Siesta Key is millions of years old , having its origin in the Appalachians and flowing down the rivers from the mountains until it eventually was deposited on the shores of Siesta Key . </P>
<P> Unlike beaches elsewhere that are made up mostly of pulverized coral , Siesta Beach 's sand is 99 % quartz , most of which comes from the Appalachian Mountains . Even on the hottest days , the sand is so reflective that it feels cool underfoot . It 's estimated that the sand on Siesta Beach and Crescent Beach on Siesta Key is millions of years old , having its origin in the Appalachians and flowing down the rivers from the mountains until it eventually was deposited on the shores of Siesta Key . </P>
where does siesta key beach sand come from
where does siesta key beach sand come from
the Appalachian Mountains
the Appalachian Mountains