Names of the Dunes
The Red Sand Dunes go by several different names locally - Đồi Cát Hồng (Pink Dunes), Đồi Cát Vàng (Golden Dunes), and Đồi Cát Bay (Flying Sand Dunes) all refer to this same site, the name shifting depending on what colour the sand happens to look like when someone visited: pale yellow in the morning, deepening to orange around midday, and turning a warm pink-red by late afternoon and sunset. 'Đồi Cát Bay' specifically references how sea winds constantly reshape the dune surface, shifting sand from day to day.
Location and Colour
The dunes sit about 2km east of Mũi Né town centre (roughly 25km from Phan Thiết city itself), directly above the fishing village on the bay - the most accessible dune landscape in the area and the easiest to visit independently without a tour. The colouration is associated with iron-rich minerals in the sand, giving the dunes their characteristic orange-red tones - the same minerals that give much of Bình Thuận province's soil its rust colour; locals sometimes describe the wider dune area as having as many as 18 subtly different sand colours in total.
Size and Changes Over Time
The dunes are smaller than the White Sand Dunes at Bàu Trắng - rising perhaps 20–30 metres at their highest - but the colour is more vivid and the proximity to the fishing village below adds a human dimension that the more remote white dunes lack. Worth knowing: some longtime visitors and locals say the dunes were noticeably larger and more dramatic around 2006, closer to a genuine desert landscape, and have gradually shrunk and flattened since - wind, erosion, and human activity (including sand extraction and nearby development) are commonly cited as factors. If the dunes look less dramatic than older photos suggest, this is likely part of why.
Sunset
At sunset, the low western light saturates the red-orange colour and the fishing boats in the bay catch the same warm tones - the combination of dune, village, and water in a single frame is one of the most characteristic images of Mũi Né.