Live trace rock

What i would like to do is turn this image of a rock into a vector image using Inkscape

Step 1: press on your image and go to Path > trace bit map.

Step 2: select Multiple Scans and pick a number between 8 to 50 in Scans box and press OK.

Finished product with:

40 scans                                           16 scans                                          8 scans