Ragged Keys are small islands north of the upper Florida Keys.
Earlier names for these islands were "Knox Island", "Laurence Island", "Los Paradisos", "Mascaras", "Mucaras", "Mucasas", "Pollock Island" and "Soldiers Island".
The northernmost of these islands, Ragged Key #1 has been inhabited in past. The remains of an old wooden dock are in hazardous condition. The deteriorated concrete wall encircles majority of the island. The remains of previous development are concrete pillars and what used to be a cistern and looks like a broken concrete tank. 
- http://keys.fiu.edu/gazetteer/00000380.htm "Key Names" Florida Keys Gazetteer
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