The structure is an open shelter constructed with lava stone.

The observatory is an open shelter built with lava stone found at the construction site.

It is built entirely in black lava stone, which makes it highly distinctive, and visible from a great distance.

The wall was built to the water level out of lava stones.

The specialty, however, is meat grilled on lava stone.

Your main course - steak, fish, skewers of vegetables - is brought raw, with a hot lava stone on which to cook it.

Besides, he hoped, there had to be some air entering the chamber through the porous lava stone.

A huge fireplace of gigantic lava stones dominated the big space.

The ground floor has a large central door, bordered with lava stone and with an oil lamp.

By the sides of the entrance there are two dark windows also edged with lava stone.