in the version o ( 'the silmarillion ' made in 1930 ( see footnote on p. 208 ) , the last account of the fall of gondolin to bc written and the basis for that in chapter 23 of the published work , the text actually reads : ' ... much is told in the fall of gondolin : of the death of rog without the walls , and of the battle of ecthelion of the fountain ' , andc .