ROCK WALLS
1. The parapet wall following the edge of the caldera for the length of the promenade has overall integrity. It is a primary site element contributing to the historic landscape and should be preserved.
2. Sections of the wall that have been altered, rebuilt, or are deteriorated, should be rehabilitated as part of a comprehensive preservation maintenance program for the entire wall.
3. In the reconstruction of individual wall segments, attention must be given to the appropriate use of materials, proper alignment, form, and scale in order to ensure conformity to the original wall (see TYPOLOGY: Construction Technologies stonework).
OBSERVATION BAYS
1. The three primary bays at Rim Village — the Sinnott Memorial Bay, the Mather Bay, and the Lodge Bay — have integrity and are contributing structures in the historic landscape. All three should be retained.
2. Reconstruction and rehabilitation of portions of the lodge bay, including steps, walks, and walls, is strongly recommended. Original fabric should be reused to the degree possible and the historic design should be the basis of any reconstruction work.
3. Vegetation located adjacent to, or in some cases, planted in association with the design of all three bays should be monitored as part of a cyclic preservation maintenance plans. In cases where vegetation is encroaching and undermining the structural integrity of the feature, it should be carefully removed under the supervision of an engineer.
4. An engineer should evaluate the structural stability of the north side of the Mather Bay. If determined structurally sound, a hemlock tree should be reestablished in the center of the bay as per the historic designs.
5. Whenever possible, consideration should be given to reestablishing plant materials in the planting beds that worked to create and define the secondary bays along the promenade.
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