<p>It began with a plan to drain Pensacola Bay, and ended with a hurricane. In between was 30 years of struggle to colonize Santa Rosa Island.</p>
<p>Today the site lies peacefully under a blanket of white sand. Low-lying dunes and typical barrier island vegetation give no hint at what's underneath, and the sound of waves crashing on the Gulf of Mexico shoreline is easily heard. But about two feet down lie what should be extremely well-preserved remains of the third Spanish settlement in Pensacola.</p>