Sandboarding is a popular activity at China's desert tourism sites - 鸣沙山 (Dunhuang, Gansu), 库布齐沙漠 (Inner Mongolia), and 沙坡头 (Ningxia). 鸣沙山's dunes are even said to 'sing' (鸣 = to ring) when sliders rush down them.
memory
Built parallel to 滑雪 (skiing) and 滑冰 (ice skating): 滑 (slide) plus the surface you slide on. Once you know the pattern, 滑沙 is instantly readable.