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        <td> Colorado is a state of contrasts. 
The eastern half is a mostly treeless prairie. On the prairie,
trees grow only in the Platte and Arkansas river valleys, with 
a few found along a few other small streams. The forested Rocky 
Mountains rise abruptly from the high plains about midway 
from east to west and cover most of the western half of the
state. There are 54 mountains in Colorado that top 14,000 feet.
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        <td> South Dakota is somewhat similar
to Colorado in that it is a mostly treeless prairie 
in the east, but has a range of forested mountains in 
the west. But in South Dakota, the mountains, named the
Black Hills, lie only in the far western part of the state
and rise to only a little over 7500 feet. However, they 
are still the highest mountains east of the Rockies in 
the U.S. The famous Mount Rushmore is nestled in the middle 
of the Black Hills.
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