Mt Lindesay was named by Dr Thomas Wilson in honour of Colonel Patrick Lindesay CB, commander of the 39th (or Dorsetshire) Regiment. The CB denotes that he was a Companion of The Most Honourable Order of the Bath, a very high award indeed. The regiment had spent the years 1818 to 1825 in Ireland fighting the "insurgents" before being posted to New South Wales to administer justice to the convicts. Two other names from the regiment are probably more familiar: Captain Charles Sturt and Captain Collett Barker (whose explorations were in the south west of WA).
To get to the cache follow the Scotsdale Rd out of Denmark then turn onto the Mt Lindesay Rd. This is a good gravel road and after 13 km will lead to the Mt Lindesay National Park and walk trail.
The walk trail is wide and well maintained. About two thirds of the way will find you crossing some granite sheets which may be dangerous if very wet. At the top there is a little circuit trail with vantage points towards great views. The cache can be reached by path and then a walk over rocks. No need to scrub bash. Make the find and then take a seat and enjoy the scenery to the north.
You will pass roymerc's WA Explorer cache which celebrates Dr Wilson's achievements. There is a great quote in the listing where Wilson praises the views from the top. He also mentions fatigue! Be warned.
Allow 3 hours return. Take food, water and weatherproof clothing. Moderate fitness required.