That looks to me like the work of a woodchuck, ground hog, marmot, or my favorite....satan. They were the bane of my existance a few years back. Even living and breeding under my kitchen/mud room. Could not keep a tomato, herb, morning glories, anything...except foxgloves...they're poisonous! I trapped them with a have-a-heart and then relocated them. Also, coincidently, the massive road improvements that had disrupted all the local wildlife, has since been completed. In fact, much of the 1/2inch hardware cloth that we used in building our coop was left over from the protective hoops we used to protect our plants during the woodchucks' reign of terror. Try spraying your veggies with a "tea" made with red pepper flakes. You'll need to reapply each time it rains, but it's non-toxic and may be enough to put the beasties off your eatery. Good luck!
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