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Do you know if the tunnel-like hole is funnel-shaped or more circular? If funnel-shaped, it could be a "Grass Spider" aka "Funnel Web Grass Spider" who is reportedly a low-risk, non-aggressive spider:
http://www.termite.com/spider-.... If circular-shaped, it could possibly be Hololena sp. (no common name):
http://web.pdx.edu/~smasta/Mas.... It, too, is not considered a threat to people and it feasts on insects:
http://bugguide.net/node/view/...
I hope this helps you and, again,
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