In 1790, a fast-moving lava flow raced through a grove of ohia lehua trees here, cooling quickly and creating lava rock molds of their trunks. Today the ghostly sentinels punctuate a well-shaded, paved .7-mile loop trail through the rich foliage of the 17-acre park. Facilities include restrooms and a few spots for picnicking (or ducking out of the rain during one of the area’s frequent showers). Some areas with deep fissures are fenced off, but keep to the trail regardless for safe footing.