Across
8
Megalithic burial mound; tumulus (6)
9
Ship used in the quest for the Golden Fleece (4)
10
Underground alcoved tunnel for burying the dead (8)
13
Overcome completely; take by surprise (5,3,3)
15
Austrian composer (1824-96) of ten symphonies and four masses (5,8)
17
In England and Wales, the Crown's nominal chief executive in a county (7)
20
Pertaining to ancient Greece and Classical Greek culture (8)
21
Site of the Taj Mahal (4)
Down
1
Geographical region of W Europe (6)
2
Caesar (54-68 AD), infamous purger of early Christians (4)
3
Allocation; apportionment (5,2,3,4)
6
Of galactic proportions (6)
12
In the recent past (2,2,4)
21
Long period of years; longest division of geological time (4)