Anthony Hall witnessed the fire and sent us this video.
Detectives want witnesses to come forward with information about a suspicious fire near Bournemouth Beach.
Police were called at around 3.40pm on Saturday to reports of a gorse fire along the cliffs between Pier Approach and Boscombe Pier.
A cordon was set up and part of the promenade cleared to allow the fire service to tackle the blaze.
There have been no reports of any injuries and no other property was damaged. The fire was extinguished at around 7pm.