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Related to lapies: blind valley
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A bedrock surface, beneath the soil, roughened as a result of action by a solution of limestone, gypsum, or other soluble rock; usually deeply trenched along joints. Such a bedrock presents hazards and results in excessive costs for footings and foundations.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.