On your day in port in hilo explore two of the big islands most spectacular sites on a shore excursion first discover hawaiis scenic rainbow falls amid the lush foliage of wailuku river state park then head to hawaii volcanoes national park and ascend from sea level to the 13 667 foot 4 165 meter summit of mauna loa one of the worlds largest volcanoes this hilo shore excursion allows you to enjoy the best of hawaiis natural beauty from active volcanoes to cool waterfalls