Photo: Michael Macor, The Chronicle

What locals call "The Little Church in the Hills" was totally destroyed in the Detwiler Fire in Mt. Bullion, as seen on July 21, 2017.

What locals call "The Little Church in the Hills" was totally destroyed in the Detwiler Fire in Mt. Bullion, as seen on July 21, 2017.

Firefighters with Cal Fire continue to battle the Detwiler Fire on the outskirts of Mariposa, on July 19, 2017.

Firefighters with Cal Fire continue to battle the Detwiler Fire on the outskirts of Mariposa, on July 19, 2017.

An air tanker drops fire retardant along the ridge line above Lake McClure, on July 20, 2017.

An air tanker drops fire retardant along the ridge line above Lake McClure, on July 20, 2017.

George Skogan stayed in his home during the evacuation and is now clearing brush around his backyard, in Mt. Bullion, Ca., on Friday July 21, 2017.The fire came within 30 yards of his home.

George Skogan stayed in his home during the evacuation and is now clearing brush around his backyard, in Mt. Bullion, Ca., on Friday July 21, 2017.The fire came within 30 yards of his home.

What locals call "The Little Church in the Hills" was totally destroyed in the Detwiler Fire in Mt. Bullion, Ca., as seen on Friday July 21, 2017.

What locals call "The Little Church in the Hills" was totally destroyed in the Detwiler Fire in Mt. Bullion, Ca., as seen on Friday July 21, 2017.

What locals call "The Little Church in the Hills" was totally destroyed in the Detwiler Fire in Mt. Bullion, Ca., as seen on Friday July 21, 2017.

What locals call "The Little Church in the Hills" was totally destroyed in the Detwiler Fire in Mt. Bullion, Ca., as seen on Friday July 21, 2017.

Jeana Marshall, made a sign for the fire personnel fighting the Detwiler Fire, near where they have made over 5,000 sandwiches, at the River Rock Inn, as seen on Fri. July 21, 2017, in Mariposa, Ca.

Jeana Marshall, made a sign for the fire personnel fighting the Detwiler Fire, near where they have made over 5,000 sandwiches, at the River Rock Inn, as seen on Fri. July 21, 2017, in Mariposa, Ca.

An inmate firefighter team out of the McCain Valley keeps watch on a fire line as they continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

An inmate firefighter team out of the McCain Valley keeps watch on a fire line as they continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

Air tanker drops fire retardant along the ridge line above Lake McClure, as the northern end of the Detwiler fire moves closer to Coulterville, Ca., on Thursday July 20, 2017.

Air tanker drops fire retardant along the ridge line above Lake McClure, as the northern end of the Detwiler fire moves closer to Coulterville, Ca., on Thursday July 20, 2017.

Firefighters with Cal Fire continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

Firefighters with Cal Fire continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

A helicopter makes a water drop as firefighters continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

A helicopter makes a water drop as firefighters continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

A scorched Highway 49 north of Mariposa, Ca., on Thursday July 20, 2017.

A scorched Highway 49 north of Mariposa, Ca., on Thursday July 20, 2017.

Dessy White packed up her chickens as Detwiler fire moved along the ridge lines at the northern end of the fire near Coulterville, Ca., on Thursday July 20, 2017. She lives about two miles from the fire.

Dessy White packed up her chickens as Detwiler fire moved along the ridge lines at the northern end of the fire near Coulterville, Ca., on Thursday July 20, 2017. She lives about two miles from the fire.

Cal Fire strike team leader Zack O'Neill works a fire line as firefighters continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

Cal Fire strike team leader Zack O'Neill works a fire line as firefighters continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

Jeffrey Hernandez with Cal Fire as firefighters continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

Jeffrey Hernandez with Cal Fire as firefighters continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

The Detwiler fire burned over 45,000 acres Wednesday as over 2,000 firefighters worked to gain control of the blaze, officials said.

The Detwiler fire burned over 45,000 acres Wednesday as over 2,000 firefighters worked to gain control of the blaze, officials said.

An inmate firefighter team out of the McCain Valley keeps watch on a fire line as they continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

An inmate firefighter team out of the McCain Valley keeps watch on a fire line as they continue to battle the Detwiler Fire on the outskirts of Mariposa, Ca., on Wednesday July 19, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

Structures and vehicles were destroyed as the fast moving fire tore through Mt. Bullion, Ca. on Tuesday night, as seen on Thursday July 20, 2017.

A burned sign along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

A burned sign along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Burned out structures and vehicles along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Burned out structures and vehicles along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Burned out structures and vehicles along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Burned out structures and vehicles along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Burned out structures along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Burned out structures along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Barbara Milazzo, on Wed. July 19, 2017, rescued her friend's cat "Andromeda" and brought the cat to the animal rescue center at the Evangelical Free Church evacuation center in Oakhurst, Ca.

Barbara Milazzo, on Wed. July 19, 2017, rescued her friend's cat "Andromeda" and brought the cat to the animal rescue center at the Evangelical Free Church evacuation center in Oakhurst, Ca.

Burned out structures and vehicles along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Burned out structures and vehicles along highway 140 west of in Mariposa, Ca., on Wednesday July 19, 2017.

Melted lawn chairs rest outside a residence leveled by the Detwiler fire near Mariposa, Calif., on Wednesday, July 19, 2017.

Melted lawn chairs rest outside a residence leveled by the Detwiler fire near Mariposa, Calif., on Wednesday, July 19, 2017.

Flames rise behind a vacant house as a firefighter works to halt the Detwiler fire near Mariposa, Calif., on Wednesday, July 19, 2017. (AP Photo/Noah Berger)

Flames rise behind a vacant house as a firefighter works to halt the Detwiler fire near Mariposa, Calif., on Wednesday, July 19, 2017. (AP Photo/Noah Berger)

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Firefighters make progress on blaze in Gold Country - SFGate