I know we live in a litigious society, and government agencies are worse than most in putting up silly notices to cover their asses in even the most far-fetched scenarios.
I also know that it’s a park that’s got some large wilderness areas starting not too far away. It’s actually a trailhead for a fair-to-middlin’ trail that heads up into the Santa Monica Mountains. So yeah, it’s not completely unlikely that there might be snakes.
…wouldn’t it just make more sense to teach the snakes to read?