Suddenly his pulse quickens as the high - pitched whistle descends to a guttural clicking noise ​ — a sure sign that his device is above buried metal.
Pēkšņi vīrieša sirds sāk sisties straujāk, jo svilpojošo skaņu austiņās ir nomainījuši dobji klakšķi — droša zīme, ka zemē slēpjas metāls.