 Challenge:
For this activity, you are an archaeologist challenged with finding
prehistoric sites which are places that contain human tools and
artifacts older than 500 years.
Use the Map Legend below and the clues provided to choose
a systematic method for
finding archaeological sites on the map shown. You only have enough
time and resources to dig ten test pits, so choose your study locations
well. Dig a test pit by clicking anywhere on the map.
There are four sites (three clusters and one single) on the map
above. The eagle will appear if you find any of the four sites,
but stick around and try again until you uncover them all.
Map Legend:
- Skagit River and its tributaries are represented by light blue
lines.
- Flood Plain: Areas where the river presently floods during high
water conditions.
- Alluvial Fan: Alluvial fans are created as creeks and tributaries
spread boulders, cobble and pebbles across an area that fans out
toward the main river. These areas have flooded recently and may
cover any ancient archaeological sites.
- Terrace 1: Terraces represent old flood plains. They are no longer
flooded by the Skagit River. Terrace 1 is a flood plain which is
young—less than 200 years old.
- Terrace 2: This ancient flood plain is covered by trees that are
no older than 400 years.
- Terrace 3: This ancient flood plain is very old and represents
boulders and cobble deposited during the Pleistocene—over 13,000
years ago.
- Valley Wall: Difficult to access steep areas where extensive prehistoric
archaeological sites are unlikely to be found.
- Topographic Lines: Green lines represent 50 foot changes in elevation.
River is lowest. Valley walls begin substantial elevation rises.
- Main roads are represented by black lines.
- Test pits which contain artifacts. After all ten test pits have
been dug, click on the red pits to see what you have found.
- Empty test pits.
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