Baffled why you posted this question in this post, but an educated guess is as long as you are out of state tagged, you are fine to ride anywhere that in-state riders are allowed to ride without getting state OHV permit. I assume DV is Death Valley so a Kalifornia guy would need to answer it.
'06 Beta RR 525 "Red KTM"
'02 GasGas EC 300..."The Smoke"
'10 KTM 990 ADV R "Brutus Beefcakes"