Mara can't see a thing, of course, but back when she had her eyes she always loved to gaze out from any high viewpoint over all these expansive panoramas stretching out before her. (And she could
easily see a llama a mile away.

) Now, she still does exactly the same thing — as if she knows perfectly well that the broad valley and the many lakes are all right there below.
20 minutes later, we were a little higher:
And that was our high point for the day. It was the longest and highest hike Mara had done for several months, and I didn't want to push it too much as despite how enormously she loves it up in the mountains I do have to kind of remind myself that she's really quite an old dog now.
~~~
And indeed, here's her age in human terms, assuming she's a Golden Retriever, or an Andean equivalent that's pretty close. According to
this site, it'd be quite rare for a Golden Retriever to live to more than 13.
But Mara is nearly 13 and a half. And she's still going VERY strong.

This is the age calculation:
Other doggie-age sites put her at over 90(!), but that seems just too ridiculous considering her energy and agility. 84 is plenty, and I'm as sure as I can be that we still have a great deal more high mountain hiking together ahead of us — by which time she really will be well into her 90s and beyond.