Permit granted

Hooray - the permit that allows us to go up onto the South Patagonian Icecap has come through. We had started to look seriously at alternatives in case it didn't come through but luckily it did.
Now we need to check how we go about authorising our crossing of the border between Chile and Argentina on the icecap - there will be no one to stamp our passports up there. The border runs essentially on the divide, which means it meanders backwards a forwards across mountain ridges, mainly on the eastern edge of the Andes.