Given the task definition and input, reply with output. In this task, you will be given a passage to read. A fill in the blank question will be given to you. Your answer should fit the blank appropriately.

The island has two groups of caves in the rock @-@ cut architectural style . The caves are hewn from solid basalt rock . All caves were painted in the past , but only traces remain . The larger group of caves , which consists of five caves on the western hill of the island , is well known for its Hindu sculptures . The primary cave , numbered as Cave 1 , is about 1 @.@ 5 km ( 0 @.@ 93 mi ) up a hillside , facing the ocean . It is a rock @-@ cut temple complex that covers an area of 5 @,@ 600 m2 ( 60 @,@ 000 sq ft ) , and consists of a main chamber , two lateral chambers , courtyards , and subsidiary shrines . It is 39 metres ( 128 ft ) deep from the front entrance to the back . The temple complex is the abode of Shiva , depicted in widely celebrated carvings which reveal his several forms and acts . On the eastern part of the island , on the Stupa Hill , there is a small group of caves that house Buddhist monuments . This hill is named after the religious Stupa monument that they display . One of the two caves is incomplete , while the other contains a Stupa made in brick . fill in the blank : The island has two groups of caves in the rock @-@ __________________ architectural style .
cut