We decide that turning back is the least worst choice. The footing over the chasm is indeed a little better climbing than descending,and we make it to solid ground. And hug each other.
Now we face a long hard afternoon,with a five-hour descent into the valley and a climb up the other side. At least the path will be wide. First we stop at a mountain hut for coffee and apple strudel with lots of whipped cream,pull out the maps and plan a new hike for the week.
It isn't difficult to find one. The Karwendel area has wonderful"wanderwege"(hiking trails) wandering all over the place. We choose a route that will take us mostly through valleys from the village of Scharnitz to the touristy town Pertisau. It won't be life-threatening,and it will still be a spectacular and challenging five-day trek.
Hiking trails around Innsbruck are generally well-maintained and signposted,with red spots indicating easier routes and black spots showing us the ones we now know to walk miles to avoid.
Our adjusted itinerary turns out to be brilliant. It takes us across rolling farmland and through dense forests of pine and larch. The rugged,rocky,snow-streaked peaks of the Alps tower above us. They're less intimidating when we're looking up at them rather than trying to find a way between them,but they're still awe-inspiring.
We follow fast-flowing rivers,fed by tumbling waterfalls. We occasionally step aside to let mountain-bikers pedal past us - at breakneck speeds going downhill,at barely walking pace struggling uphill on the rough tracks. We stop regularly at cafes to keep up our caffeine and apple strudel levels.
Towards the end of each day we make a stiff climb up to one of the huts that have been perched on vantage points by the German Alpenverein (Alpine Association).
Yes,we're still in Austria,but we're near the border,and the Germans have a habit of organising things for the rest of Europe these days. They do the huts well,with warm bunk-rooms,hearty meals and absurdly large beers available at reasonable prices. Life in the huts is jolly and communal. There are usually no showers,but we're all smelly friends together.
We find that we can comfortably cover about 15-25 kilometres each day,though in our planning we take more account of the vertical metres required. Up to 1000 metres of climbing is reasonably manageable for fit walkers;anything over 1500 metres feels like hard work.
At the end of the week we roll down into Pertisau,on the lovely lake known as the Achensee. Every house has geraniums in window boxes,elaborately carved wooden gables and typical Tyrolean painting around the window and door frames. Nearly every building is a hotel or guest house,trying to outdo its neighbours in the cuteness department,and there are very welcome hot showers.
Later in the week we read a shocking news report of five German climbers dying in the Swiss Alps. It leads me to research the statistics on hiking accidents. There are far too many tragedies. In the summer of 2010,there were 155 fatal accidents in the Austrian Alps alone - 10 of the victims were climbers,10 were mountain-bikers and 81 were hikers like us;80 per cent of the total were men.
Hiking at its best is a great,healthy activity,but it's a hobby,not something to risk your life for. Be very,very careful. Please.
THREE PERFECTLY SAFE THINGS TO DO IN INNSBRUCK
The Alpine Zoo
Europe's highest zoo specialises in animals from mountainous regions of the world. Entry €9 ($11). Seealpenzoo.at.
Ambras Castle
The restored mediaeval castle of Ferdinand II displays art and weapons,as well as portraits of the Hapsburgs from 1400-1800. Entry €10. Seeinnsbruck.info.
Nordketten Cable Car
A spectacular,effort-free and safe way to ride up the Nordketten Range and look out on the Karwendel region. €27 return. Seenordkette.com.
FAST FACTS
Getting there Austrian Airlines has a fare to Innsbruck for about $2407 low-season return from Sydney and Melbourne including taxes. Fly to Bangkok (about 9hr with Thai Airways) and then Vienna (11hr 30min) and Innsbruck (50min);see austrian.com.
Staying there Beds in dormitories in Alpenverein huts cost about €20 ($25) a night. Add about €12 for dinner. Seealpenverein.de. For accommodation in Innsbruck,including guided hiking packages,seeinnsbruck.info.
Further information Detailed maps and guidebooks are essential,as are good boots. See Mark Zahel's Karwendel-Rofan (in German but with maps) and an overview of the Scharnitz to Pertisau route in Jonathan Hurdle'sWalking Austria's Alps:Hut to Hut.