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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1520-30 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1531-35 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1540-50 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1540-50 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1580-90 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1620-30 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1640-50 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1660-70 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1680-90 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1720_30 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1740-50 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1760-70 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1780-90 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1800-10 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1820-30 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1840-50 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1860-70 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1880-90 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1910 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1920 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1930 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1940 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1950 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1970 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 1973,5 in ink and colored pencil on graph paper.
