CROWSNEST PASS, Alta. - Alberta officials say it's inevitable that a piece of Turtle Mountain will once again come crashing down - they just don't know exactly when.
It's been 105 years since the top of the mountain in the Crowsnest Pass in the southern Rocky Mountains came thundering down without warning.
At least 70 people died that day when the small mining town of Frank was buried under more than 30 million cubic metres of rock, many pieces the size of large trucks.
Officials are concerned that the mountain is still sliding toward the valley because a busy highway and railroad pass through the so-called "splash zone."
There are also a dozen or so homes nestled under Turtle's shadow.
The province hopes plans to double the number of sensors to detect slight movements in the rock will give a warning of days or even weeks before another slide.
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