Mushing is where a bunch of dogs, the dogs that I'd think of as Huskies, pull a sled behind them with a chap on the sled. For the picture to look right the man has to have big furs on and there need to be snow shoes tied to the sled.
In El Seque they do it just as dusk falls, the drivers have those torches that fasten to their heads and the sleds have wheels. The Huskies are the same though.
Actually it got more bizarre than that. I suppose a wheeled version of a ski sled is rather innovative and using the dirt roads that run through and around El Seque is just because the people who want to have a go don't happen to live near Fairbanks, Alaska. However, the first few competitors were lads on mountain bikes with some sort of harness that attached their one or two dogs to the bike. Now that was a bit odd.
It was good to see though. I wonder if a van selling pie and mushy peas would have done well!