Boot Key is an island in the middle Florida Keys

Florida Keys

The Florida Keys are a coral archipelago in southeast United States. They begin at the southeastern tip of the Florida peninsula, about south of Miami, and extend in a gentle arc south-southwest and then westward to Key West, the westernmost of the inhabited islands, and on to the uninhabited Dry...

 located adjacent to Key Vaca

Key Vaca

Key Vaca is an island in the middle Florida Keys, located entirely within the borders of the city of Marathon, Florida. It is often incorrectly identified as "Marathon Key."- Geography :Key Vaca is located between Fat Deer Key and Knight's Key...

. Boot Key is within the city limits of Marathon, Florida

Marathon, Florida

Marathon is a city on Knight's Key, Boot Key, Key Vaca, Fat Deer Key, Long Point Key, Crawl Key and Grassy Key islands in the middle Florida Keys, in Monroe County, Florida, in the United States. As of the 2000 census, the city had a total population of 10,255. As of 2005, the population estimated...

, USA. The island is largely undeveloped despite having a bridge spanning Boot Key Harbor

Boot Key Harbor

Boot Key Harbor is a natural body of water located in the middle of the Florida Keys, entirely within the city limits of Marathon, Florida, USA....

 to Key Vaca, which is now closed to pedestrian and vehicular traffic.http://www.ci.marathon.fl.us/index.asp?nid=46

Immediately adjacent to Boot Key is a 38 acres (153,780.7 m²) tract of land from which the United States Government broadcasts Radio Marti

Radio Martí

Radio y Televisión Martí is a radio and television broadcaster based in Miami, Florida, financed by the United States government , which transmits Spanish radio broadcasts to Cuba...

.http://www.accessmylibrary.com/coms2/summary_0286-28845579_ITM These broadcasts consist of news and cultural information intended for residents of Cuba

Cuba

The Republic of Cuba is an island nation in the Caribbean. The nation of Cuba consists of the main island of Cuba, the Isla de la Juventud, and several archipelagos. Havana is the largest city in Cuba and the country's capital. Santiago de Cuba is the second largest city...

.http://www.ibb.gov/

A hawkwatch is conducted every fall on Boot Key.