Dirt mounds surrounded the pit so that the spectators stood five or six people deep around the edge of the pit.
( ( Dirt mounds ) ( ( ( surrounded ( ( the pit ) so ) ) ( that ( ( the spectators ) ( ( stood ( ( ( ( five or ) six ) people ) deep ) ) ( around ( ( the edge ) ( of ( the pit ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Dirt) (NNS mounds)) (VP (VBN surrounded) (ADVP (NP (DT the) (NN pit)) (RB so)) (SBAR (IN that) (S (NP (DT the) (NNS spectators)) (VP (VBD stood) (ADVP (NP (QP (CD five) (CC or) (CD six)) (NNS people)) (RB deep)) (PP (IN around) (NP (NP (DT the) (NN edge)) (PP (IN of) (NP (DT the) (NN pit))))))))) (. .)))
The ground is totally flat.
( ( The ground ) ( ( is ( totally flat ) ) . ) )
(ROOT (S (NP (DT The) (NN ground)) (VP (VBZ is) (ADJP (RB totally) (JJ flat))) (. .)))