In Hawaii , paths leading to waterfalls are landmarked by man-made debris. This makes the prospect of green traveling even more attractive, as we continue to recognize our impact on the natural world around us. Here are a few tips for the … Each island has a myriad of natural attractions; you can see volcanoes on Maui , or Akaka Falls on the Big Island, or hike the Na Pali coast on Kauai, just to name a few. One of the best activities for a green traveler may be a bike …