the tallest tree in the world is in one of these valleys
so the location of the tallest known tree in the world, a redwood in california, united state of america is kept secret for conservation reasons, but its pretty easy to find out where its located (41°12'32.97"N 124°00'42.60"W) and now all the ground is trampled and stuff, so maybe the australian government saw this and decided to keep the fact that they even have the tallest tree secret because they didnt want people messing up the place, the tallest known mountain ash was about 435 feet tall, but probably >500 feet tall at its tallest before it fell sometime around 1872, I think it is likely there are some trees taller than the current tallest 385 foot tall tree recorded in one of these valleys in the (mostly unsurveyed) tasmanian wilderness
I am interested in this sort of thing so I might visit these valleys, as well as near mt baw baw, victoria which is where the 500 foot tree once stood.