Ripon in North Yorkshire, Cooper says, is very susceptible to sinkholes, the most famous – some 20m deep – dating back to 1834.
Ricardo's commitment to diversity runs deep, dating from his teenage years in South Texas.
The earliest known pictures of large, deep kettledrums date from 12th-century Mesopotamia.
The sense of history in these deliciously shaded places is so deep - some date to the bronze age or earlier - that, as the authors write, "even the four-by-four drivers sometimes attempt a more polite pace".
The deepest ice retrieved so far comes from layers 10,000 feet deep and dates back 740,000 years.
The upper level, about two feet deep, was dated at about 11,000 years ago.
Out in California, an oil company started digging a hole about 16 months ago, in the hope of reaching a deep stratum dating from the Eocene period.
MIT has a long history of pedagogical boldness balanced with deep introspection, dating from its earliest educational innovation: the merger of lofty intellect with hands-on experimentation.
He and Mr. Stevens have deep ties dating back to their native Mississippi; in 1982, when Mr. Barbour was still a boy, Mr. Stevens ran the Senate race for Mr. Barbour's uncle.
The New Yorker, February 19 , 1955P. 23 Out in California, an oil company started digging a hole about 16 months ago, in the hope of reaching a deep stratum dating from the Eocene period.
