After some class riding through the passes, I noticed that a fuel stop wouldn't go astray... We weren't that far from our destination, but potentially we'd arrive with only 20km left in the tank. Not ideal.
To compound the issue I missed the turn off for our accommodation...
Then we entered a tunnel of unknown length...
The way things are looking, even if we do a u turn at the end of the tunnel, we may / may not get back to the tunnel entrance.

And even if we do make it to the overnight stop, we definitely won't have enough juice to get to a petrol station the next morning. Oh, and it's lashing down with rain (except when we're in the Tunnel of Doom) !
Luckily, when we came out of the far end of the tunnel, there was a petrol station just one km ahead.


Happy days!
To compound the anxiety, there's no Internet or GPS when in the tunnel so you've no idea how long more there is to go. Or where the next petrol station is. But it all worked out in the end.