I think there is a walkthru on gamezebo, tips and tricks that got me thru that darn cliff scene. Some items way too tiny to see or invisible on my monitor without a magnifier. Otherwise a great fun game, loved the graphics and era.
The maddening part is, once I get one like the numbered rocks from a hint or a spoiler screen shot, next time I'm there I've forgotten where the heck I found it last time. I should wait til I can afford a bigger monitor than 15" to replay because I really love this HOG and the other, Death on the Nile.