Map Viewing Service (WMS) of the dataset: Gravitary envelope of alpine ski area in Haute-Savoie

Space in which the location of the ski lifts and the configuration of the terrain allow the presence of skiers (and similar practices), even in the absence of slopes.
This envelope corresponds to the snow-covered areas accessible to skiers from the top of the ski lifts of a ski area (within the meaning of Article R.122-4 of the Planning Code), and driving them naturally by gravity to the feet on a ski slope or a ski lift departure from the same ski area.
It includes “off-piste” areas, but does not have any area unsuitable for skiing due to the difficulty of the terrain (rock bars, too steep slopes, avalanche equipment...), too dense afforestation, a ban
regulations (to ensure the conservation of animal species...) or snow conditions too random.
This envelope cannot be equated with the right-of-way of the alpine ski slopes or the contour of the ski area (within the meaning of Article R. 122-4 of the Urban Planning Code).
It only allows us to have an approximation of it, in keeping with the principle that ski slopes must allow a ski lift to be used again in the same ski area.
It proves useful in terms of graphical representation of the right-of-way of ski areas and on a practical level, to locate the construction of runways and snowmaking facilities located on a “virgin site” and “off-site”
Virgin" (notions taken into account in the definition of new structuring tourist units).

All ski areas accessible from the resorts of Haute-Savoie are represented, served by at least 3 ski lifts authorised to operate.

该空间内，滑雪缆车（ski lifts）的布设位置与地形地貌的配置条件，即便在无天然雪坡的情况下，仍可满足滑雪者及同类滑雪运动参与者开展活动的需求。
本空间范围对应某滑雪区域（依据《规划法典》（Planning Code）R.122-4条定义）内，滑雪者可从该区域滑雪缆车顶部抵达的积雪区域，且滑雪者可借助重力自然滑行至雪坡脚下，或抵达同一滑雪区域内的滑雪缆车下站。
该范围包含野滑区域（off-piste areas），但剔除所有因地形难度（岩架、过陡坡、雪崩相关设施区域……）、造林密度过高、禁令法规（如为保护野生动物物种设立的禁令……）或雪况极不稳定而不适宜滑雪的区域。
本空间范围不可等同于高山雪道的用地红线（right-of-way），或《城市规划法典》（Urban Planning Code）R.122-4条定义的滑雪区域边界轮廓。
其仅能作为该滑雪区域的近似范围，契合“雪道需支持滑雪者在同一滑雪区域内再次使用滑雪缆车”的原则。
该空间范围在可视化呈现滑雪区域用地红线方面具有实用价值，同时在实操层面可用于定位“未开发场地（virgin site）”与“场外未开发场地（off-site virgin）”（上述概念在新型结构性旅游单元的定义中已被纳入考量）上的雪道与造雪设施建设选址。
本数据集涵盖了上萨瓦省（Haute-Savoie）各滑雪度假村可抵达的所有滑雪区域，且这些区域均配有至少3台获批运营的滑雪缆车。