I posted this in the gallery, but that doesn't seem to be getting much traffic, so I'm double posting here as well...don't be mad ;)...

We did a lot of yard work last fall after moving into a new home, including digging up basically the whole back yard to flatten it out (it was a big ol' cliff), get rid of some trees, plant grass, etc. Well there was one stump in the back yard that was there when he moved in, partially rotted. We burned it, chopped it up, and buried it when we flattened things (seemed at the time to be only roots left). Well now the craziness below is happening. What is this stuff? Should we be concerned, or just let it rot itself out? Will it spread? "Digging it out" isn't really an option, cuz it seems to be wood under there. I just don't want it to be dangerous or spreading... (also note the lovely brown patches...we think the buried tree roots are stealing nutrients from the fresh grass. we've refertilized, and hopefully it'll be better next year)...

(click thumbnails for larger)

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