The revelation that these are extinct Tasmanian tigers and not dingos and Marilyn Lee's wonderful rock drawing image led to this puzzle. The lichen covered rock is 'Ruskin's Seat' near Coniston in the English Lake District. The tiger began as one of the statues -- after selecting, I put a stroke around the outline, then filled the shadow areas with a custom pattern I made to try to match the aboriginal crosshatching. The stick figures are actually a font -- any Arthur Ransome fans out there? I'll post the solution later.