Pahoehoe lava is smooth and can have a ropy, billowy appearance. It's low in viscosity, the measure of fluid thickness, and generally moves slowly. A'a lava is much more ragged in appearance.

Lava flows are outpourings of molten rock on the Earth's surface. They're very common in volcanic eruptions, and they come in different forms, according to AccuWeather. Pahoehoe lava is smooth and ...

Pahoehoe lava is smooth and can have a ropy, billowy appearance. It's low in viscosity, the measure of fluid thickness, and generally moves slowly. A'a lava is much more ragged in appearance.

Pahoehoe lava is smooth and can have a ropy, billowy appearance. It's low in viscosity, the measure of fluid thickness, and generally moves slowly. A'a lava is much more ragged in appearance.

Pahoehoe is the name for smooth lava, while a'a is more jagged. Geologists examining the "toothpaste lava" say the spiny texture can result in serious injury if people fall while trying to walk on it.

Top News 4 Big Island men admit removing, selling lava rock from Mauna Loa Forest Reserve By Star-Advertiser staff May 14, 2018 2018 Volcanoes COURTESY DNLR ...

Lava flows are outpourings of molten rock on the earth's surface. They're very common in volcanic eruptions, and they come in different forms: pahoehoe an a'a.