During that time theSan BernardinoSheriff and rescue crews have searched the area repeatedly to no avail.
San Bernardino sheriffs said they have conducted eight searches to find him, along with eight other operations.
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The effortspicked up again last Saturday.
Julian SandsGetty Images
The effort included two helicopters and drone crews.
Multiple areas include steep terrain and ravines, which still have 10-plus feet of ice and snow.
The Sheriffs Department said Sands case remains active and search efforts will continue in a limited capacity.
Patrick Hipes contributed to this report.
