The search for a missing American tourist “cannot go on forever”, police have said.
Susan McLean disappeared from the Moness Resort in Aberfeldy on May 17.
The last confirmed sighting of Mrs McLean, from Boiling Springs, Pennsylvania, was a CCTV image captured at 7.45pm on the night she went missing.
Chief Inspector Ian Scott said: “We have done a lot of the search but there are still significant resources there.
“We are still carrying out house-to-house work and still looking at CCTV, we are still doing searches.
“There is no marine or air support, but if we thought we needed that we would make that request.
“We are continuing in the meantime with an extensive search.
“That cannot go on forever the more searches we do the fewer places we have left to search where there’s any indication that Susan may have gone.”
The police have spent more than a week scouring the town, with support from Tayside Mountain Rescue Team and search dogs, the operational support division, the air support unit and the dive and marine unit.
Those teams continued to carry out searches in the area over the weekend, including on the road out of Aberfeldy, the A826.
Officers also revisited the town between 7 and 9pm on Sunday, one week on from Mrs McLean’s disappearance.
Anyone with information is asked to call the police on 101.