Gatineau Park leaves change colour in fall, tourists and locals are drawn to the park's lookouts, roads, and pathways to enjoy the autumn scenery. Pink Lake is a meromictic lake found in the park. Tiny algae in the lake give it a bright green colour. The lake's name comes from the Pink family who originally owned property in the area. The park includes many other . King Mountain, the highest peak in Gatineau, rising an almost vertical from the Eardley Escarpment, was the first triangulation point in Canada. Also, the mountain's unique positioning provides an interesting spectrum of vegetation ranging from evergreen
Gatineau Park and deciduous forests to windswept savannas. The mountain is also home to a number of trees which are rare in the area, including some that are nearly 600 years old. For many years, a red-coloured cedar cross was located on top of King Mountain. Originally erected by Old Chelsea's parish priest, Father Maguire, it could be seen for miles around. It eventually rotted and fell over the cliff. Gatineau Park provides habitat for many species of birds including the pileated woodpecker and common loon. Turkey vultures and migrating hawks may be observed soaring on the thermals above the Eardley Escarpment.