After breakfast near ten o'clock, we went down onto the embankment.

"So here we are, back on shore," Conseil said.

"I'd hardly call this shore," the Canadian replied. "And besides, we aren't on it but under it."

A sandy beach unfolded before us, measuring 500 feet at its widest point between the waters of the lake and the foot of the mountain's walls. Via this strand you could easily circle the lake. But the base of these high walls consisted of broken soil over which there lay picturesque piles of volcanic blocks and enormous pumice stones. All these crumbling masses were covered with an enamel polished by the action of underground fires, and they glistened under the stream of electric light from our beacon. Stirred up by our footsteps, the mica-rich dust on this beach flew into the air like a cloud of sparks.

The ground rose appreciably as it moved away from the sand flats by the waves, and we soon arrived at some long, winding gradients, genuinely steep paths that allowed us to climb little by little; but we had to tread cautiously in the midst of pudding stones that weren't cemented together, and our feet kept skidding on glassy trachyte, made of feldspar and quartz crystals.

The volcanic nature of this enormous pit was apparent all around us. I ventured to comment on it to my companions.

"Can you picture," I asked them, "what this funnel must have been like when it was filled with boiling lava, and the level of that incandescent liquid rose right to the mountain's mouth, like cast iron up the insides of a furnace?"

"I can picture it perfectly," Conseil replied. "But will master tell me why this huge smelter suspended operations, and how it is that an oven was replaced by the tranquil waters of a lake?"

"In all likelihood, Conseil, because some convulsion created an opening below the surface of the ocean, the opening that serves as a passageway for the Nautilus. Then the waters of the Atlantic rushed inside the mountain. There ensued a dreadful struggle between the elements of fire and water, a struggle ending in King Neptune's favor. But many centuries have passed since then, and this submerged volcano has changed into a peaceful cavern."

"That's fine," Ned Land answered. "I accept the explanation, but in our personal interests, I'm sorry this opening the professor mentions wasn't made above sea level."

"But Ned my friend," Conseil answered, "if it weren't an underwater passageway, the Nautilus couldn't enter it!"

"And I might add, Mr. Land," I said, "that the waters wouldn't have rushed under the mountain, and the volcano would still be a volcano. So you have nothing to be sorry about."

Our climb continued. The gradients got steeper and narrower. Sometimes they were cut across by deep pits that had to be cleared. Masses of overhanging rock had to be gotten around. You slid on your knees, you crept on your belly. But helped by the Canadian's strength and Conseil's dexterity, we overcame every obstacle.

At an elevation of about thirty meters, the nature of the terrain changed without becoming any easier. Pudding stones and trachyte gave way to black basaltic rock: here, lying in slabs all swollen with blisters; there, shaped like actual prisms and arranged into a series of columns that supported the springings of this immense vault, a wonderful sample of natural architecture. Then, among this basaltic rock, there snaked long, hardened lava flows inlaid with veins of bituminous coal and in places covered by wide carpets of sulfur. The sunshine coming through the crater had grown stronger, shedding a hazy light over all the volcanic waste forever buried in the heart of this extinct mountain.

But when we had ascended to an elevation of about 250 feet, we were stopped by insurmountable obstacles. The converging inside walls changed into overhangs, and our climb into a circular stroll. At this topmost level the vegetable kingdom began to challenge the mineral kingdom. Shrubs, and even a few trees, emerged from crevices in the walls. I recognized some spurges that let their caustic, purgative sap trickle out. There were heliotropes, very remiss at living up to their sun-worshipping reputations since no sunlight ever reached them; their clusters of flowers drooped sadly, their colors and scents were faded. Here and there chrysanthemums sprouted timidly at the feet of aloes with long, sad, sickly leaves. But between these lava flows I spotted little violets that still gave off a subtle fragrance, and I confess that I inhaled it with delight. The soul of a flower is its scent, and those splendid water plants, flowers of the sea, have no souls!

We had arrived at the foot of a sturdy clump of dragon trees, which were splitting the rocks with exertions of their muscular roots, when Ned Land exclaimed:

"Oh, sir, a hive!"

"A hive?" I answered, with a gesture of utter disbelief.

"Yes, a hive," the Canadian repeated, "with bees buzzing around!"

I went closer and was forced to recognize the obvious. At the mouth of a hole cut in the trunk of a dragon tree, there swarmed thousands of these ingenious insects so common to all the Canary Islands, where their output is especially prized.

Naturally enough, the Canadian wanted to lay in a supply of honey, and it would have been ill-mannered of me to say no. He mixed sulfur with some dry leaves, set them on fire with a spark from his tinderbox, and proceeded to smoke the bees out. Little by little the buzzing died down and the disemboweled hive yielded several pounds of sweet honey. Ned Land stuffed his haversack with it.