pAt least 22 lava fissures have opened in lower Puna, Hawaii, since a May 4 earthquake near the Kilauea volcano. The Star Advertiser said at least 47 structures had been destroyed.ppA presidential disaster declaration has been issued for the Kilauea area, according to local reportsa.ppHawaii News Now said that rivers of lava continued to threaten homes, with eruptions also releasing dangerous gases. Lava entering the ocean was creating high levels of gas, Hawaii Civil Defense said.ppThis video shows activity from fissures 17 and 20 in Lanipuna Gardens, Hawaii, on May 18.