Random keywords:
Pictures tagged with keyword 'cross-section':
These photos were chosen at random from my photo collection, selected from the set of photos that are publicly visible and are related to keyword 'cross-section'.
Related keywords: vietnam, tunnels, tunnel, three, rooms, model, levels, level
(those are the words that appear most frequently in photos that are also tagged "cross-section".)
See also: dictionary definitions of 'cross-section'.