Simplify the following text for a Grade 7 native English-speaking person.
Original: One remote shelter , several hundred kilometres from Darwin , has a painting of the wharf at Darwin , including buildings and boats , and Europeans with hats and pipes , some apparently without hands ( which they have in their trouser pockets ) .
Simplified: In one rock shelter , hundreds of kilometres from Darwin , there is a painting the wharf at Darwin . It shows buildings and boats , the Europeans with their hats and pipes .