As of 6:30 a.m. Tuesday morning, the Treasure fire burning near Leadville still hovered at 320 acres and 10 percent containment.
"Good progress was made yesterday on the tactical objectives," the Lake County Office of Emergency Managment Facebook page noted. "Tuesday's operations will be continued focus on arresting cross-hill fire spread."
A controlled burn on the fire's west side happened Monday. Firefighters easily contained spot fires that erupted from the controlled burn, officials said.
Line preparation continues on the south side of the fire with the goal of beginning controlled burning to eliminate fuels for the wildfire to consume.
Firefighter crews on the line number 90, out of 112 total incident personnel - 12 are support and supervisory roles and 10 are stationed on the helicopter fighting the fire.
The fire's progress to the north has been largely arrested by a grassy meadow leading into alpine terrain, which is what seems to have ceased the fire's progress eastward as well.
"We don't expect that to change. It's reached tree line and tundra, and tundra almost never carries fire," U.S. Forest Service spokeswoman Sarah Gallup said.
The fire began at roughly 11 a.m. Saturday and is burning 5 miles northeast of Leadville in Birdseye Gulch on the western side of Mosquito Peak. It remains roughly 10 miles southwest of Quandary Peak and does not appear to be ready to jump the Mosquito Range ridgeline between Leadville and Alma.
Officials believe the fire to be human-caused, but it's still under investigation.
The daily update on the fire is expected around 6 p.m. today, but if fire activity changes, one could come sooner.
"There's no activity that I anticipate that would cause an update," Gallup said.