A Hook

Following yesterday's puncture, I rang the tyre depot this morning to be told they didn't have a tyre like mine in stock but would order one which would be delivered tomorrow.
Not wishing to use the repaired tyre unnecessarily I elected to stay home.
Did a bit of virtual mountaineering (we are in the Himalayas and should reach the summit of Annapurna South 23,684ft early next week). Dug out my telephoto lens and tried to learn a bit more about it with regard to close-up photography.  This is a hook ..... :-)  :-)