The invention relates to a trench cutter (10) for the parallel introduction of at least two lines (11), in particular cables or pipes, into the ground, comprising at least two laying units (12), with each laying unit (12) each having a milling device (13) for the formation a gutter (14) in the ground and a line guide (15) for laying a line (11) in the gutter (14) formed or can be formed by the milling device (13), and a towing vehicle (16) for pulling the laying units (12) through the ground along a designated direction of travel (F).
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