Help will come, but it'll be a search over/in rough terrain, rather than drive up to your 911 address!
Coincidentally, I came across a brilliant app called What3words which encodes every location on earth, no matter how remote, to a unique combination of three words (the clue is in the name...
)
If you have it on your phone or on a tablet linked to a sat phone if you are somewhere really remote, opening the app immediately gives you the three word combination unique to your exact location.
Apparently many if not most emergency services are able to use this system.