Some of them have a very precarious thin footbridge underneath them that could give way at a moment's notice, taking your sled, you, into the abyss, never to be seen again.
Dažiem no tiem pāri stiepjas plāni,  bīstami celiņi, pa kuriem tik tikko var noiet, kuri kuru katru brīdi varētu ņemt un sabrukt, pazudinot tevi un tavas kamanas ledainā bezdibenī.