base. Draw the first line parallel to and along the largest

groin. Mark this line C$.$ Draw two more parallel lines $($A and

B$)$ one$-$inch apart to the west. Draw and label three lines $($D$,$

E$,$ F$),$ again parallel to line $C$ and one$-$inch apart, to the east.

e$.$ Remove the $1954$ tracing paper and place it over the

$1973$ photo. Align the streets where you can, so the trac$-$

ing and the photo can be accurately compared.

f$.$ Using a colored pencil, trace the base of the bluff with a

solid line and the shoreline with short dashes. Label the

colored$-$pencil lines $"1973."$