Cave Light: Darkness First for Contrast

An interior that is mostly dark. Heavy earth covering and solid walls keep the overall illumination inside the house very low, and curved concrete and stone surfaces absorb most of the remaining light. Precisely because of this, the light entering through the few openings becomes extremely strong: the patch of ground beneath the skylight, and the entire landscape outside the large opening facing the valley, are several levels brighter than their surroundings. People's gaze is naturally drawn to the light. Avoid: illuminating the interior uniformly brightly, having too many windows that eliminate contrast, using light-colored surfaces to reflect and increase overall brightness, or having artificial lighting brighten all dark areas.

Translated from Chinese by AI.

一個大部分是暗的室內。厚重的覆土與實牆讓房子的內部整體照度很低,曲面的混凝土與石材把剩下的光也吃掉大半;正因為如此,少數幾個開口進來的光變得極強:天窗下的那塊地面、向谷大開口外的整片風景,亮度比周圍高出好幾級。人的視線自然被拉向光。避免:把室內照得均勻明亮、開太多窗讓對比消失、使用淺色表面反射提高整體亮度、讓暗部被人工照明全部補亮。