Most mountains are part of a mountain chain/range, and while many are tall, their prominence is reduced due to them being part of a, say, ridge. The piece of information concerning prominence and membership in a given chain, if any, is vital. It's not a matter of life and death, but your edit removes that information. Reword, by all means, if you hate the word 'standalone', but include that information. If you don't, I will have to put it back as it was. —