Swimmers amazed by mesmerising ‘portal to hell’ on Californian lake

SWIMMERS were left in amazement after a gigantic hole appeared in the middle of a lake in the United States. Onlookers questioned whether they had come across a supernatural whirlpool or a portal to hell as the mysterious hole appeared in Lake Berryessa in California, The Sun reports. However, although looking like a natural phenomenon, the giant hole is in fact a man-made spillway known as a “glory hole”. The funnel is used to drain the lake to stop it from overflowing. An aerial view of the man-made spillway on…