MY-TEST> (describe #(#(1 2 3) #(4 5 6)))
#(#(1 2 3) #(4 5 6))
  [simple-vector]

Element-type: T
Length: 2
; No value

MY-TEST> (describe #2A((1 2 3) (4 5 6)))
#2A((1 2 3) (4 5 6))
  [simple array]

Element-type: T
Dimensions: (2 3)
Storage vector: #<(SIMPLE-VECTOR 6) {101745FCAF}>
; No value