(S (S (S (S (BASENP (DT The) (NN peak)) (VP (MD may) (VP (VB be) (VP (VP (VBG getting) (ADJP (JJR smaller))) (PP (IN from) (BASENP (NN subsidence))))))) (SBAR (IN as) (S (BASENP (PRP it)) (VP (VBZ reaches) (BASENP (JJ extreme) (NNS heights)))))) (CONJP (COMMA ,) (CC and)) (S (ADVP (RB again)) (S (NP (DT the) (BASENP (NNS glaciers) (CC and) (NN snow))) (VP (VBP help) (S (VP (TO to) (VP (VP (VB stabilize) (CC and) (VB expand)) (BASENP (DT the) (NN mountain) (PRP itself))))))))) (PERIOD .))