The ground rumbled amongst coastal dwellings overnight on Good Friday as a long period easterly groundswell made landfall across the East Coast. With the swell's forerunners displaying periods in the 20 second range, there was never any doubt that we'd be looking at some seriously large waves - and many outer reefs came to light this morning, producing some of the biggest surf seen in New South Wales this year. Here's a small selection from Sydney's Northern Beaches this morning.