Hello @donkeypong, how are u doing? Speaking of national parks and rock mountains, your country is very lucky have it. And it can be a great land for mountain climbers. I often watch Koboy films from America where the background is a sturdy rock mountain. Actually I was horrified when I saw the mountain climbers climbing high mountain rocks. That is very dangerous. I did not know Muir. . I just know him now after reading your writing. I think he's someone who is very great. Have a nice day, sir.