From their event page: 

Join Fairmount Park Conservancy and ecotherapist and Lenape language keeper Krista Nelson on a two-mile hike along the wooded Boxers’ Trail in East Fairmount Park. The summer solstice signifies the longest and lightest day of the year. Dating all the way back to ancient times, the solstice marks a mystical, spiritually-heightened day when the sun reaches its highest point in the sky. Celebrated by many cultures and religions at festivals and ceremonies around the world, it honors a deep sense of devotion to nature, Mother Earth, and the energizing power of the sun.

During this hike, we’ll welcome the longest day of the year by focusing on intentions set in the winter and spring. Those intentions are like seeds in our personal gardens of promise. Planted in the fertile soil of winter’s darkness, they withstood the cold and rooted deep. In the spring, they sprouted to face both the rain and the winds of change. Now is the time to let them shine in the summer light. We’ll stop by Randolf Creek where we can release into the water all that we no longer need, and then with the setting sun, we’ll share a fun tribute to the five major nature elements.