This is Andrew Reitz working in a patch of timber south of Vernonia, Oregon on land owned by Longview Fiber. 

Andrew is putting the undercut in this big tree with his Stihl 084 fitted with a 50" bar.

Big trees require a big undercut. Andrew's 50" bar doesn't reach through.

Andrew is putting the back cut in -- its getting ready to fall.

Here Andrew is setting a few wedges to insure this big tree falls where he wants it to.

Timmberrr!

This is Andrew, his big saw, and the huge stump he just made.