15 Ac Enormous gnarled trees, source of 41 (CAVIAR ?) 7 letters
O?S?G?R
52 Ac Orkney tidal race misplaced in SW Chile and Spain. 8 letters
S?E?C?I?
These are the last two I need to complete the puzzle. Have been puzzling over them all day - getting nowhere. Will someone please put me out of my misery ?