Continuing on our hunt for the "308" series along Puerto Blanco Drive, we came to the next letter in the alphabet: N. N 308 is just north of the road and, like the others, set into a large round concrete monument. The disk is in very good condition. There was no sign of the witness post, not even a mound of concrete with an impression in it like we found near a few of the other marks along this road.
Recovered in good condition. The witness post is no longer present. (Also reported that the monument projects 2 inches.)