fixing modifier subject mismatches

[erinnoelle]

how i fix this sentence
Climbing up the canyon, the Colorado River glittered in the sun far below us.

 

[corum]

how i fix this sentence
Climbing up the canyon, the Colorado River glittered in the sun far below us.

dangling participle

As we were climbing...

Although it is obvious that rivers can't climb, there is a constraint on conjuncts to the effect that their implied subject has to agree with the subject in the matrix clause.
The meaning of the original sentence is obvious, though.