I.12.030-032 (rivers smoothing over the area by the Hellespont) as a variant of the tradition that Achaeans made a funeral mound for Achilles by the Hellespont in these verses, in the context of analyzing the obliteration of the “props” that mark an Achaean expedition against Troy, and the irony of Xanthos/Skamandros’ threat to bury Achilles under a mound of silt