How Golda Meir, Indira Gandhi, and Margaret Thatcher Wrought a New Standard of Leadership. It is surely time to recognize what an immense improvement has been wrought in world standards of governance by the rise of female national leaders.
Shield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield.
There are many types of lava caves, with these being the most notable: Lava tubes are the most common and most extensive kind of lava cave. Lava tubes usually form in pahoehoe lava flows, though exceptions exist. As the lava is emitted from the vent area, it spreads in the path of least resistance.