Around 1500 b.c. , a massive volcanic eruption at Santorini destroyed not only Akrotiri under feet of ash and pumice but the whole Minoan civilization.
( ( Around ( 1500 b.c. ) ) ( , ( ( ( a ( massive ( volcanic eruption ) ) ) ( at Santorini ) ) ( ( ( ( destroyed ( not ( only Akrotiri ) ) ) ( under ( feet ( of ( ( ash and ) pumice ) ) ) ) ) ( but ( the ( whole ( Minoan civilization ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Around) (NP (CD 1500) (NN b.c.))) (, ,) (NP (NP (DT a) (JJ massive) (JJ volcanic) (NN eruption)) (PP (IN at) (NP (NNP Santorini)))) (VP (VBD destroyed) (NP (RB not) (RB only) (JJ Akrotiri)) (PP (IN under) (NP (NP (NNS feet)) (PP (IN of) (ADJP (JJ ash) (CC and) (JJ pumice))))) (PP (CC but) (NP (DT the) (JJ whole) (NNP Minoan) (NN civilization)))) (. .)))
The volcano has lain dormant for the past four thousand years.
( ( The volcano ) ( ( has ( ( lain dormant ) ( for ( the ( past ( ( four thousand ) years ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN volcano)) (VP (VBZ has) (VP (VBN lain) (ADJP (JJ dormant)) (PP (IN for) (NP (DT the) (JJ past) (QP (CD four) (CD thousand)) (NNS years))))) (. .)))