(Portland, OR)  --  Crews are continuing to mop up the Mosier Creek Fire in the Columbia River Gorge.  Fire officials say the blaze is 75-percent contained as of last night.  The Oregon State Fire Marshal says crews who were mobilized from other counties to help fight the fire are being sent home.  Authorities say the wildfire burned just under one-thousand acres and 36 structures, including eight homes.  Investigators believe the fire is human-caused, but they are still working to find the exact source.