Ultima IX - Strange Secret #1: Hidden lever and chest near Despise
The shown route is the fastest I know with as few time spent cheat-flying as possible only at the point when it is really necessary. Sure, it's possible to use telekinesis, but I don't think the developers had that in mind, for without that, one can't get out from the foliage (if fly cheat is not used).
That, and that it's just a bit of gold makes it seem that it's some unfinished secret. If it's possible to access it via other way or if the lever does anything else besides what is shown, I couldn't find out about it.
+1 bonus topaz
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