Ash from Mt. St. Helens. Although it looks harmless if an animal
breathes ash it can puncture their lungs.
Reticulite is a special pumice where so much gas was trapped that the
rock looks like interlacing bubbles.
Tephra refers to blocks and bombs, and smaller debris like scoria,
pumice, and ash. As this becomes solidified as a rock it has unique
Volcanic bombs ejected from a violent eruption. Imagine a bomb falling
100 feet on your car! Not a pretty picture.
The volcanic rock has a vesicular texture, meaning that it is
Rhyolite all swirled up with obsidian. This looks like a violent