A man is in the Royal Hobart Hospital with serious injuries after crashing his mountain bike on the West Coast.
He came off his bike and hit rocks on a hairpin corner of the Waterfall Track at Mount Owen.
The Westpac Rescue Helicopter was called in to airlift the 44-year-old to Hobart.
Police are urging the public to download the free Emergency+ app.
It enables smartphones to display exact coordinates in case a rescue is needed.
"During summer the West Coast mountain bike trails have proved to be exceptionally popular with a high number of both visitors and locals riding on the trails," said Senior Constable Brad Coulson.
"The incident today highlights the invaluable help our State Emergency Service and Tasmania Fire Service volunteers provide to the Tasmanian community, I’d also like the thank the members of the public who assisted rescue crews on this occasion."
Image: West Coast Council