2007. In the other direction, along Govetts Creek, the route then starts a continuous climb towards the Grand Canyon, where it forks again; one track goes to Neates Glen, while the other is a steep climb to Evans Lookout. The general direction of travel is towards the southeast and this direction is recommended as the final climb at Evans Lookout is not as difficult as the ascent at Perrys Lookdown. Creeks in the valley are seasonal, the water is unsafe to drink. The walk is much more strenuous in summer due to the higher daily temperatures and the added risk of bushfires. The valley has been affected by bushfires at various times, notably in 1982 and in November 2006. In particular the Blue Gum Forest was damaged by back burning. Owing to the harsh bushfires in 2006, the Blue Gum forest and other walking tracks in the valley were closed to bushwalkers to allow the regrowth of vegetation. As of March 2009, all tracks in the Grose Valley are open, with the exception of the Rodriguez Pass into the valley from Evans lookout and the Grand Canyon, closed due to a landslide. Conservation The Grose Valley arguably became the cradle of the modern conservation movement in NSW when Blue Gum Forest was saved from threatened destruction in 1931-32. A group from the Sydney Bush Walkers club, led by Alan Rigby, were camped in the forest when they chanced upon a Bilpin farmer, Clarrie Hungerford. Hungerford had a lease of the forest and told the bushwalkers he planned to clear the blue gums to plant walnuts. The bushwalkers went away and started a campaign to stop him. Eventually, they raised £130 which they paid Hungerford in exchange for his relinquishing the lease. It was a substantial amount at the height of the great depression. 80 pounds came in the form of an interest-free loan from James Cleary, then head of the NSW railways and subsequently chairman of the Australian Broadcasting Commission. Cleary was also a bushwalker. One of the key activists in the campaign was Myles Dunphy, who at the time was developing his plans for the Blue Mountains National Park. During the 1800s there were various proposals to dam the Grose Valley, and one such dam would have been at the forest. The area was also the subject of a number of proposed coal and shale mining ventures, and in