[R] How can I "declutter"/make a biplot less messy in R

[dss]

I am doing a principle component analysis on a dataset with a lot of
different variables and have constructed a biplot of the data. 
Unfortunately, as can be seen on the attached image, the biplot is very
messy, cluttered, and hard to read.  I have performed a few modifications
including outlier removal from a few of the variables, which has made the
plot better, however it still is too cluttered to read the variable names. 
Is there any further improvment that can be made to the attached plot and if
so what steps should I take?

Thanks,
Derek


http://r.789695.n4.nabble.com/file/n4633703/biplot.jpg 

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