There's a newspaper article on an old trail segment up Mount Timpanogos: http://www.heraldextra.com/news/local/local-man-wants-to-see-original-aspen-grove-trail-reopened/article_e50ae16b-d03c-5f75-84a9-c181cfae835f.html. The man in the article has apparently died, judging from an obituary I found when I Googled his name. Phil told me where the lower access to this trail is, though. I made it perhaps halfway up, veering above the new trail, then switching back toward the mountain. However, when the badly overgrown trail reached a rock ledge, it seemed to peter out into game trails going every which way, and I couldn't pick up the correct old trail. Does anyone know the old trail, and if so can you enlighten me on the route? Thanks.

Paul Wake
http://user.xmission.com/~wake/timp.html

I did it once in 1992 because that's the way the people whom I descended with went. It was in pretty good condition back then. I don't know how it is now.

Anyway, it would be easier to find from the top down rather than the bottom up. This is because the trail is visible from above and if you look carefully down Primrose Cirque. The old trail is also visible on Google Earth, so if you wanted to find it, looking at Google Earth should help.