In May 2015, the only way to reach flowing lava on the Big Island of Hawaii was by a 6 mile, round trip, walk through mud which was constant on the entire hike. Sometimes 1 inch and up to mid-calf at other times. If you go, hope for clouds or rain to make the glow more vibrant during the daytime. This hike must be done with a Hawaiian guide, not on your own. The process is to find the lava flow and wait for bulges where the lava breaks out and flows. Treat Madame Pele with respect at all times.