Why Do I need Travel Insurance?
Travel insurance covers things that your health insurance policy mostly likely does not cover. Especially if you’re not a resident of California, your health insurance coverage may not cover as much as you think it does (or anything at all) when you’re traveling and engaging in dangerous activities in the great outdoors. Also, it’s unlikely that your health insurance will cover rescue operations, delayed / cancelled trip reimbursement, road side assistance and other related expenses when things go terribly wrong.
Check out https://www.travelexinsurance.com for travel insurance.