The inner wall of a typical short apse or chapa form encloses the Cella.
The most characteristic feature of the
style is the door- frame of the Cella with elaborate over- door components.
These cave- temples of Eastern Chalukyan authorship show individualistic
characters in their lay- out, iconography and the scheme of the Cella.
The Cella is rectangular
and has provision for a platform on its rear with a socket in it for Vishnu or Durga, but not for Siva or a linga.
The two bas- relief replicas in miniature on either flank of the facade of the Ramanuja mandapa
cave- temple are likewise ekatala, Nagara forms, but with their Cella empty.
Being four- sided and square from base to finial, it belongs to the Nagara class and is dedicated to Vishnu,
who is shown in relief as standing inside the Cella.
The corresponding one on the east is also oblong with the
sala superstructure having a passage through in place of a Cella and functioning as the antarala passage to the main sanctum.
The series of small and elegant all- stone temples at Kaliyapatti, Tiruppur, Visalur and Panangudi( Pudukkottai district) have square ekatala vimanas with simple
moulded adhishthanas, less than 2 metre square at the base, carrying on top over the Cella a square griva and sikhara.
This scheme of anarpita hara was possible in the case of vimanas where the Cella was sandhara,
or enclosed by a double wall, with circumambulatory interspace between the two walls and with the inner wall rising to a greater height to form the second tala harmya, while the outer wall rose to the height of the aditala alone carrying over its prastara and hara.