In Kinderen op de duin, Léon Spilliaert captures a serene moment with children playing on sandy dunes. The colors are soft and muted, with shades of beige and pale blue dominating the scene. The figures of the children are depicted in playful poses, suggesting joy and freedom.

The background features a gentle horizon, blending seamlessly with the sky. The painting is characterized by Spilliaert's unique brushwork, which creates a sense of movement and life. The use of light is subtle, enhancing the dreamlike quality of the scene. The composition is balanced, drawing the viewer's eye towards the children while still allowing the dunes to play a significant role.

This work exemplifies Spilliaert's Symbolist style, focusing on emotion and atmosphere. Léon Spilliaert was a Belgian painter known for his Symbolist works that often explore themes of solitude and introspection. Kinderen op de duin reflects a more playful side of his artistry, showcasing the innocence of childhood. An interesting fact about this painting is its ability to evoke nostalgia, reminding viewers of their own carefree days spent outdoors.

Spilliaert's work remains influential in understanding the Symbolist movement in Belgium.