This is a picture (2004) taken of the hull of the Titanic 92 years after she sunk. The wreck lies at approximately 3,500 metres below the surface of the water, which is the same distance as the tops of some alpine peaks. This very beautiful and peaceful photograph along with a selected few other relatively hi-res images can be found at the Boat Shed

All photographs by Robert Ballard, the original diver discoverer of the Titanic wreck. The image was retrieved from the above link.

I found this and other beautiful circuit drawings whilst foraging in the derelict back buildings and basement of the Rundfunk der DDR, Funkhaus Nalepastrasse. Even thought the main building is still used for recording and performance, the back buildings are a hive of discoveries for the explorer with skip-raking tendencies with all sorts of communicative artefacts lying around from 70's intercoms to glass tanks for battery making.

This circuit is the most complex, and produces a variable EM output that is detectable by the previous two circuits.

A more complex circuit with more components, limiting the input to lower frequencies.