Caves form naturally underground from weathering of rock. There are several types of caves including sea caves formed by wave erosion, lava caves formed by volcanic processes, and glacier caves within glacial ice. Examples visited include sea caves in Oregon home to sea lions, lava tubes in Hawaii's volcanoes national park, and glacier caves in Alaska's Mendenhall Valley glacier experiencing retreat from global warming. While caves can be tourist attractions, they are fragile ecosystems impacted by human waste and trash if visitors do not respect the environment.

1. CAVES
A world down under : Caves
Jackqualine Metoyer

2. CAVES FROM MY POINT OF VIEW
First thing that popped in my head …. Movie caves. In every movie 9 times out of 10
something bad is about to happen when you see or enter a cave.
For example: ……….

3. MOVIE CAVES
The hills have eyes The Descent The Cave

4. NOT THE CASE…… SORRY

5. CAVES
A cave or cavern is a hollow place in the ground, especially a natural underground
space large enough for a human to enter. Caves form naturally by the weathering of
rock and often extend deep underground. The word cave can also refer to much
smaller openings such as sea caves, rock shelters, and grottos.

6. TYPES OF CAVES
Sea Caves
sea cave, also known as a littoral cave, is
a type of cave formed primarily by the
wave action of the sea. The primary
process involved is erosion. Sea caves are
found throughout the world, actively
forming along present coastlines and as
relict sea caves on former coastlines.
Lava Caves
A lava cave is any cave formed in volcanic
rock, though in typical use it usually
means caves formed by volcanic
processes, which are more properly
termed volcanic caves. Sea caves, and
other sorts of erosional and crevice
caves, may be formed in volcanic rocks,
but are unrelated to volcanic processes
and typically form long after the volcanic
rock was emplaced.
Glacier Caves
A glacier cave is a cave formed within the
ice of a glacier. Glacier caves are often
called ice caves, but this latter term is
properly used to describe bedrock caves
that contain year-round ice.

7. FIRST STOP :: FLORENCE, OREGON
Sea caves
Sea lion cave
owed by wildlife ( sea lions and birds – pigeon, bald
eagles, tufted puffins and many more)
discovered in 1880 by seaman captain William Cox
Floor area – 2 acres
Wall 125 feet high
3 openings
The cave is a tourist attraction

8. HARMFUL OR NOT
• Yes…..
• It's a tourist attraction. As humans we do not know how to appreciate wildlife.
• We throw trash in the ocean which can hurt sea animals
• Sea lions adapted to humans and their food
• Solution – pick up after yourself. They don't come over and destroy your home

9. NEXT STOP: HAWAII
Lava Cave
Lave tube cave – Nahuku ( Thurston Lava Tube)
500 years old
located within the Hawaii volcanoes national park
Often wet
Tourist attraction

10. HARMFUL OR NOT
• Yes…. Again
• Another tourist attraction
• To get to the cave you have to walk 20mins through a forest. Again trash trash trash
is a major problem.
• There are no restrooms so tourist use the forest as a public restroom.

11. LAST STOP: JUNEAU, ALASKA
Glacier Caves
13.6 miles long
located in the Mendenhall Valley
Very wet
Dangerous – can cause hypothermia
wildlife- coyotes, porcupines, squirrels and snowshoe hares

12. HARMFUL OR NOT
• Yes
• The glacier is retreating
• Global warming
• Thin walls depending on the wind flow ( do not enter)
• Collapse in last July
• http://youtu.be/rxnHSMmGdK0

13. I HOPE THIS HELP EXPLAINED THE
DIFFERENCE

14. NEVER ENTER A CAVE ALONE OR
THIS COULD HAPPEN
• http://youtu.be/q0L0S-22zho

15. FIN