Officials have said conditions are still too dangerous for ground crews to operate, and that searches would be conducted by helicopter.
The family of Julian Sands has praised the “heroic” efforts of Californian authorities searching for the missing British actor.
A statement shared by the San Bernardino County Sheriff’s Office thanked various organisations as search operations entered their 11th day.
Sands was first reported missing on 13 January in the Baldy Bowl area of the San Gabriel mountains in southern California.
In the statement, his family said they were “deeply touched” by the support they had received.
“Our heartfelt thanks to the compassionate members of the San Bernardino County Sheriff’s Department who are coordinating the search for our beloved Julian, not least the heroic search teams listed below who are braving difficult conditions on the ground and in the air to bring Julian home.
“We are deeply touched by the outpouring of love and support.”
Local and out-of-county forces – as well as specialised canine and cave teams – are involved in the search.
In a message sharing the statement, the sheriff’s department added: “As we enter day 11 of the search for Julian Sands on Mt. Baldy, we are reminded of the sheer determination and selflessness of all of the people who have aided in this search.
“We will continue to utilise the resources available to us.”
On Monday, a spokesperson for the sheriff’s department said conditions were still too dangerous for ground crews to operate, and that searches would be conducted by helicopter.
It was previously revealed that pings from Sands’ phone appeared to show he had been on the move heading further into the mountainous area of Baldy Bowl on the day he was reported missing.
Sands was born in Yorkshire and moved to Los Angeles in 2020.
His breakout role came as the free-spirited George in the period drama A Room With A View, in which he starred opposite Helena Bonham Carter.
He later made the move to the horror genre – featuring in films such as Leaving Las Vegas, Warlock and Arachnophobia.
More recently he played the chief medical officer in the 2021 Jack Lowden and Peter Capaldi-led drama Benediction.