Giant's Bridge

{t}: Add {c}.
{3}, {t}: Draw a card.
"The single stones were as big as those at Stonehenge
and must have been squared by good masons once,
though now they were cracked and crumbled...In
many places the great stones had dropped out, leaving
horrible gaps through which you looked down on the
river foaming thousands of feet below."
The Silver Chair, 6.