After over 5 years of collecting unusual place marks the Google Earth Anomalies site was created. This file will be updated regularly and will contain most of the anomalies posted at the site.
There are lines off the coast of South Carolina. So, the NC anomaly could very well be there as these iceburg 'scours' off South Carolina are noted by the Scientific Community. Some of them are the same width and were found with sonar apparently. Then again, maybe the NC anomaly is just data gobly [fluffy bunnies]...
Addition of New Belize Linear Features placemarks. These ancient road features appear to have been around before the area was flooded which indicates the features are very old. The roads are around 6 feet wide and many have been destroyed by water and Earth changes.