Blimey, keep your toys in the pram eh? The surface of the old trail was eroded to the point where it was lower than the bits to either side.
I know this because I’ve been spending my weekends fixing it for the past 8 years – as have a lot of other local riders who give a stuff about the impact we cause, and the rapidly-dwindling number of days per year when we have something solid to ride on, rather than slithering through bog.
Sorry I couldn’t find a photo showing a worse-looking bit, god knows I’ve had plenty of opportunities to take one. That photo clearly does show the widening that was taking place, as well as the mud, and I reckon if you posted it on MTBR, More Dirt, etc, as an example of your super sweet local trails, you’d (rightly) be laughed at.