A quick check of CC 263(1) has the possibility of lesser charges depending on the severity of hurt inflicted. However these are not open and closed cases, there are things to prove, #1 probably being, who made the hole, was their intent to harm anyone, and the unscrupulous lawyers will take lots of your money to haggle and you will lose time at work and pay.
On a side note, just watched on news how insurance coverage for snowplow contractors has gone through the roof, one guy went from $16K to $60K for coverage because of one claim of slip and fall. Wonder how much the shysters made off that case.