Eighteen small fires discovered burning near each other in the Carson National Forest last week were human caused, according to a forest spokeswoman. The U.S. Forest Service is still investigating the exact cause of the fires, which collectively are being referred to as the Maton Fires and had burned 105 acres as of Saturday. The Forest Service reported that the fires were rendered 100% contained on Monday and that fire crews are continuing to monitor the area. A soaking rain on Friday helped firefighting crews contain the fires, according to the Saturday news release. About 45 firefighters initially responded to the fires last week.