 On 12 July the sappers pulled down the Tsechen monastery and fort and on 14 July Macdonald's force marched east on the Lhasa road.At the Karo La, the Wide-Mouthed Pass that had been the scene of fighting two and a half months earlier, the Gurkhas skirmished with a determined group of Tibetan fighters on the heights to the left and right.Essentially however resistance faded before the advance and a policy of scorched earth was adopted – the Tibetans removed what food and fodder they could and emptied villages.