Hikers with GPS receivers have mapped out previously uncharted trails between Santa Clarita and Palmdale in northern Los Angeles County, California, the LA Daily News reports. The maps, which were tentatively approved by the county’s Regional Planning Commission this week, are available online as PDF files, but they’re big: Santa Clarita Valley and Antelope Valley (overall, 7.5 MB); Santa Clarita Valley (5.2 MB); Antelope Valley (3.7 MB). Via All Points Blog.