▁The ▁ante - ch am ber ▁is ▁l ined ▁with ▁fl ints , ▁foss ils ▁and ▁min er als , ▁and ▁the ▁main ▁chamber ▁has ▁walls ▁l ined ▁with ▁shell s , ▁foss ils , ▁cor al ▁and ▁stone . ▁Some ▁of ▁the ▁shell s ▁were ▁sent ▁from ▁the ▁Car ib bean ▁by ▁the ▁father ▁of ▁William ▁Thomas ▁Beck ford ▁of ▁Fon th ill . ▁R ather ▁than ▁just ▁a ▁shell ▁room , ▁the ▁gro tto ▁was ▁an ▁attempt ▁to ▁create ▁a ▁room ▁that ▁felt ▁under water , ▁and ▁is ▁considered ▁a ▁remarkable ▁example ▁of ▁ant ique ▁sur real ism . ▁After ▁falling ▁into ▁decay , ▁it ▁was ▁restored ▁by ▁the ▁ 1 2 th ▁Earl . ▁ ▁References ▁ ▁Further ▁reading ▁▁ ▁Bet j eman , ▁J ., ▁Sir ▁John ▁Bet j eman ' s ▁guide ▁to ▁English ▁parish ▁churches , ▁re vised ▁and ▁updated ▁by ▁N ig el ▁K err , ▁London : ▁Har per Coll ins , ▁ 1 9 9 3 , ▁p .   1 8 6 . ▁ ▁Dor set ▁Historic ▁Church es ▁Trust , ▁Dor set ▁Church es . ▁Dor chester : ▁D H CT , ▁ 1 9 8 8 , ▁p .   5 8 . ▁ ▁Hope , ▁M ., ▁Dor set . ▁In : ▁Hum ph rey , ▁S . C ., ▁ed ., ▁Blue ▁guide : ▁churches ▁and ▁chap els ▁of ▁southern ▁England . ▁London : ▁Black ; ▁New ▁York : ▁N orton , ▁ 1 9 9 1 , ▁pp