Alkefjellet is a cliff in Lomfjordhalvøya in Ny-Friesland at Spitsbergen, Svalbard.

[1] Alkefjellet is a bird cliff facing towards Hinlopen Strait.

Alkefjellet (‘mount guillemot’) is the nesting location for over 60,000 breeding pairs of Brünnich’s guillemots.

The cliffs are made of basalt columns up to100 m high, interspersed with a dark layer – a dolerite intrusion.

The molten rock, as it intruded caused the limestone in the contact zone to re-crystalize and form marble.