BEND, OR -- Dozens of Deschutes County Search and Rescue volunteers were back out near Cabin Butte, Monday, to search for a Texas man who has been missing for the last week. Lester Hyder’s truck was found Saturday off China Hat Road, southeast of Bend. Lt. Bryan Husband says, "The search conditions are extremely difficult for our volunteers; extremely taxing – physically taxing. And, at this point, we are hopeful that Mr. Hyder was able to move away from his vehicle and set up some type of shelter or get into some type of shelter; there are a number of caves in that area." He tells KBND News they changed search tactics after finding the truck, "We’re pinpointing those areas where Mr. Hyder could have potentially got shelter. So, we are pinpointing those areas in the area of Cabin Butte. Our Detectives unit is also searching around neighborhoods that are within a close proximity to that area, as well- contacting residents out there."