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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2580 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2590 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2592 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2610 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2620 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2630 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2640 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2650 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2660 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2670 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2680 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2690 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2710 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2720 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2730 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2740 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2750 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2760 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2770 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2780 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2790 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2810 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2820 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2830 in ink and colored pencil on graph paper.
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Color drawing of excavation progress (Longitudinal Section) of kilometer point 2840 in ink and colored pencil on graph paper.
