Without looking it up yet,, it appears that this wine was intended to be drank while young !! It isn`t in a bottle intended for storage I don`t think !! But I will check !! Have you kept it at the proper temperature for storage ?? It looks like you have had some evaporation there !!
I don`t guess you know what variety this wine is do you ?? It should say somewhere !! http://www.caves-sarragan.com/terroir-anglais.htm You might need to contact them to find out !! Not all wines appreciate in value !! Some are just for drinking and some turn to vinegar if not stored properly !! Even if it does,, it makes great vinagrette for salads !!