This secluded island off Islamorada preserves a rare virgin tropical natural hardwood hammock environment once common throughout the Upper Keys. It is named for the native lignumvitae tree — whose wood is one of the world’s densest and has historically been used for items such as bowling balls, steamship propeller shafts, gears and mallets.

• Tour the historic Matheson House (early pioneers), a century-old coral rock and Dade County pine caretaker’s home that now serves as the island’s visitor center.
• Guided nature hikes throughout the day departing every half hour. Choose between a one-hour, 1.2-mile extended hammock hike or a shorter .42-mile, 30-minute hike.
• Additional activities may include holiday arts and crafts, seasonal live music and nostalgic 1930s-era games such as croquet and jacks. Florida Keys historian and writer Brad Bertelli may share stories throughout the day about early residents of Lignumvitae Key, the island’s connection to nearby Indian Key, and other topics. Cookies, limeade, hamburgers, hot dogs and soft drinks may be available for a modest donation; yet you are also welcome to bring your own picnic lunch. ALCOHOLnAND PETS are NOT PERMITTED in the park.