From the Government of BC's
web site on Landslides in the province:
The Hope slide, 18 kilometres east of Hope, was one of the largest slides in Canadian history. The southwestern slope of Johnson Peak, collapsed on January 9, 1965, spreading 47 million cubic metres of debris, 85 metres thick, over a 3 kilometre stretch of the Hope-Princeton highway. The slide occurred in an unpopulated area in early morning hours and resulted in four deaths.
Viewed from above in Google Earth, this is a 2.25 square kilometre 'scar' on the earth and can be seen when the Eye Level is set at 20 Kilometres (12 Miles) above the surface.
There is a great picture here taken a few days after the slide.
You can also find an article on the slide on Wikipedia.
A travel video of the slide site can be viewed here.