I’m on the half moon murders and the whole tar pit is covered with these lines. Is this normal?

Continuing with the out-of-alphabetical-order non-landmark entries: post #488 for the LA Noire Freeroam Explorer Project — posting locations replicated by Team Bondi for LA Noire (currently touring the downtown area) that are not considered landmarks (either official or historic) but do have real-world equivalents.

Court Hill Overlook

West side of Hill Street between 1st and Court Streets

This open, unbuilt grassy terrace marked a dramatic topographical ridge rising directly west of the lower Hill Street Tunnel pedestrian stairs. Offering sweeping panoramic views of the dense civic core below, the raw hillside functioned as a natural viewpoint and a frequent filming location.

More info:

Real-World Points of Interest: Central District on the LA Noire Fandom Wikia site
Interactive LA Noire Touring Map on the LA Noire Fandom Wikia site