I managed to reach three of them. I didn't try Woods Cross because it was out of the way and reportedly had a locked gate.. I failed at Lakeside. the Garmin GPS put me at the bottom of a steep hill and said 300 feet straight in, which would translate to over 600 feet almost straight up across a railroad track and at least two cattle fences. The GPS coordinates may be wrong on this one. First success was at mile marker 77 on I80. The GPS put me right on top of it. I just had to find a frontage road the would take me there. Hint the road starts near the entrance of the salt company to the west. The arrow is surrounded by a broke down fence and I could see where someone had been scraping dirt off it, possibly Patrick. Next was mile marker 62. Again the GPS coordinates were right on but this time it was up a steep dirt and rock climb that required low range 4 wheel drive in my 12 year old Pathfinder. They didn't drive up here with model T's they must have packed the cement in on mules and mixed it on site with water that was also packed in. Mile marker 49 was a failure. GPS led me to a low dry lakebed just off the frontage road. It may have been torn up or I might be buried under the playa surface of the lake bed. Stockton was a success and a real challenge. If you parked at the LDS ward on the north end of town and hiked a quarter mile up and over the ridge line you could be close but without GPS you would miss it in the brush. The secret is to drive into town and turn west on Clark. Follow it to the end and it turns into a dirt road that passes the jail and the cemetery. Then you come to a deep open pit sand trap. Take the steep rocky track to the right of the sand trap and you will be up on the ridgeline on a track that will take you to within 100 feet of the arrow. Again this is a 4 wheel drive road. DT