 The most recognizable motifs of APT (like boats) do not occur in cave paintings (or engravings) that definitely pre-date the Austronesian arrival, the sole exception being the stenciled hand motif.Some APT examples are also characteristically found in relatively inaccessible locations like very high up in cliffsides overlooking the sea.No traces of APT has been found in Taiwan or the Philippines, though there is continuity in the motifs of spirals and concentric circles found in ancestral petroglyphs.