VOA慢速英语:Hawaii Volcanoes National Park: A Fiery World

journey - n. an act of traveling from one place to another​

unique - adj.  very special or unusual

lava - n. melted rock from a volcano​

simulate - v. to look, feel, or behave like (something)​

summit - n. the highest point of a mountain​

hike - n. a usually long walk especially for pleasure or exercise​

wind - v. to follow a series of curves and turns​

crater - n. the area on top of a volcano that is shaped like a bowl​

pumice - n. a gray stone that comes from volcanoes, is full of small holes, has a very light weight, and is used especially for smoothing and polishing things or for softening the skin​

tube - n. a long, hollow object

rush - v.  to flow or move very quickly in a particular direction​

reminder - n. something that causes you to remember or to think about something​