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GEOLOGIC COLUMN

TOUR GUIDE

MILEAGE	LOCATION	FORMATION
13.25	Widewater	Mather Gorge
13.85	Marys Wall	Mather Gorge
14.30	Great Falls Tavern	Mather Gorge
21.10	Blockhouse Point	Mather Gorge
23.13	Seneca Quarries	Poolesville
38.35	Marble Quarry Camp	Leesburg
38.50	Marble Quarry	Poolesville
47.10	Rock Hall	Leesburg
48.40	Point of Rocks	Catoctin
57.50	Weverton	Weverton
57.70	Weverton	Harpers
60.55	Harpers Ferry	Weverton
60.68	Harpers Ferry	Harpers
62.27	Dam 3	Antietam
62.90	Huckleberry Hill	Tomstown
65.30	Dargen Bend	Tomstown
68.00	Giant Steps	Tomstown
75.70	Sharpsburg Cave	Conococheague
83.30	Dam 4 Cave	Conococheague
84.00	Dam 4 Cave	Conococheague
88.40	McMahon's Mill	Rockdale Run
95.40	CumberlandValley Camp	Martinsburg

99.16	Old Quarry	Conococheague
107.16	Two Locks	Conococheague
108.40	Charles Mill	Conococheague
110.0	McCoy's Ferry	Elbrook

110.29	McCoy's Ferry	Tuscarora
127.24	Roundtop Cement Mill	Bloomsburg
127.32	Roundtop Cement Mill	Wills Creek
127.40	Roundtop Cement Mill	Tonoloway
129.90	Leopard's Mill Camp	Rose Hill
133.0	Deneen Rd.	Keefer
134.10	Lock 55	Oriskany

134.35	Long Hollow	Mahantango
136.56	Sidling Hill Aqueduct	Rockwell
137.80	Indigo Tunnel	Hampshire
140.03	Indigo Tunnel	Foreknobs
142.25	Little Orleans	Foreknobs
144.50	Devil's Alley	Braillier-Sherr
153.01	Four Mile Level	Foreknobs
154.0	Sorrell Campground	Braillier-Sherr
155.20	Tunnel Hill	Foreknobs
155.80	Tunnel Hill	Braillier-Sherr
160.60	Lock 67	Foreknobs
162.0	Town Creek Aqueduct	Hampshire
165.24	Potomac Forks Camp	Oriskany
167.60	Oldtown Cut	Mahantango
173.20	Spring Gap	Oriskany
173.60	Spring Gap	Oriskany
174.50	Lock 72	Oriskany

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