Don't know if will continue to function, but a while ago we enjoyed an informative & inexpensive half a day in Guadamar. (We've all been there, but what might we have missed?)
If you visit the Tourist Info website, you'll be able to find the day for an English spoken guided tour. This consisted of a video at the back of their office, followed by a tour by the train to the castle, the nursery for pines, the old Moorish site, the dunes & the tiled wall bordering the dunes.
We were particularly fortunate in having as a guide, a Scots lady who worked for the tourist office. She is passionate about the place & really knows her stuff.
There's lots to discover about the devastation by earthquake, & the threat which still exists of the town being buried by drifting sand. This latter is why the children every year visit the dunes to plant pines to stabilise the sand.
Worth a visit if you're feeling bored.
On a separate note, never been to the railway exhibition at Torreallano. Anyone been? If so, opinions please.