“Can’t we get some of
the diamonds?” cried Mr. Damon, as he raced
along behind Tom. “Now’s our chance.
Those fellows have all gone!” The odd man made
a grab for something as he ran.
“It’s as much as our lives
are worth,” declared the young inventor.
“We dare not stop! Come on!”
“I’d like to investigate
some of the machinery,” spoke Mr. Jenks, “but
I wouldn’t stop, even for that.”
“The storm is too dangerous,”
called Bill Renshaw. “I can show you a
shorter way out than the one those fellows have taken.
Follow me.”
“No way can be too short,”
said Mr. Parker, solemnly. “This mountain
will go to pieces shortly, I think!”
Tom shuddered. He remembered
how narrow had been their escape when Earthquake Island
sank into the sea. And that some terrific upheaval
was now imminent might be judged from the awful reports
that sounded more plainly as the adventurers raced
toward the opening of the cave. It was like the
bombardment of some doomed city.
Mr. Jenks and Tom cast one longing
look behind at the complicated and expensive machinery
that had been installed in the cave by the diamond
makers. They had abandoned it, and in it lay
the secret of making precious gems. But there
was no time to stop now, and investigate.
“This way,” urged Bill Renshaw. “We’ll
soon be out.”
“But won’t it be dangerous
to go outside?” asked Mr. Damon. “Shan’t
we be struck by lightning? There is some protection
in here.”
“None at all,” said Mr.
Parker, quickly. “This mountain is a natural
lightning rod. To stay here in this cave will
be sure death when the storm gets directly over it.
And that will be very soon. We must get on insulated
ground. Is there any part of this mountain that
does not contain iron ore?” the scientist asked
of the former spirit.
“Yes; the way out by which we
are going lands on a dirt hill.”
“That’s good; then we may be saved.”
On they ran. They had no lanterns,
but the blue light of the electricity, as it leaped
from point to point inside the cave, where there were
outcroppings of iron ore, made the place bright enough
to see.
“Here we are!” cried Bill
Renshaw at length. “Here’s the way
out!”
Making a sudden turn in the winding
passage he showed the adventurers a small opening
in the side of the crag. In an instant they had
passed through, and found themselves in daylight once
more. The sudden glare almost blinded them, for,
though the sky was overcast by clouds, from which
jagged tongues of lightning played, the outside was
much lighter than the dark cave.
“I should say it was a storm!”
cried Tom Swift. “See, it is striking every
minute, and all around us!”
In fact, lightning bolts were falling
on every side of the adventurers. Every time
the balls of fire struck, they burst open great stones,
or seared a livid scar on the face of some cliff.
As for Tom and the others, they stood on a dry dirt
hill, in which, fortunately, there was no iron ore.
To this fact they undoubtedly owed their lives, though
had there been rain, to moisten the ground and make
the earth a good conductor of electricity, they probably
would have been badly shocked. But the electrical
outburst was not accompanied by rain.
Tom looked up. He saw a compact
mass of cloud moving toward the summit of the mountain
on the slope of which they stood. From this cloud
there played shafts of reddish-green fire.
“Look!” called the young
inventor to Mr. Parker. The instant the latter
saw the cloud, he cried:
“We must get away from here
by all means! That is the center of the storm.
As soon as it gets over the mountain, where that lightning
rod is, all the electrical fluid will be discharged
in one bolt at the mountain, and it will be destroyed!
We must run, but keep on the dirt places! Run
for your lives!”
They needed no second warning.
Turning, they fled down the steep side of the mountain,
slipping and stumbling, but taking care not to step
on any iron ore. Behind them flashed the lightning
bolts.
Suddenly there was a most awful crash.
It seemed as if the end of the world had come, and
the ear drums of Tom and his companion almost burst
with the fearful report. The concussion knocked
them down, and they lay stunned for a moment.
Following the terrible report there
was a low, rumbling sound. Hardly knowing whether
he was dead or alive, Tom opened his eyes and looked
about him. What he saw caused him to cry out in
terror.
The whole mountain seemed bathed in
fire. Great blue, red and green flashes played
around it. Then the towering cliff seemed to
melt and crumble up, and the great peak, the top of
it containing the diamond makers’ cave, from
which they had fled but a few minutes before, the
entire summit was toppled over into the valley on
the other side, and in the direction opposite to that
where the adventurers stood.
Then came a profound silence, and
the lightning ceased. The storm was over, and
only the rattle of stones and boulders, as they came
to rest in the valley below, reached the ears of our
friends.
“Phantom Mountain has been destroyed,
just as I said it would be,” spoke Mr. Parker,
solemnly. Once more he had prophesied correctly.
For a few minutes the adventurers
hardly knew what to say. They arose awkwardly
from the ground where the shock had tossed them.
Then Tom remarked, as calmly as possible:
“Well, it’s all over.
I guess we may as well get back to our airship.”
“What became of Munson and the
others?” asked Mr. Damon.
Mr. Jenks pointed to the trail, far
below. The figures of some men, running madly,
could be seen.
“There they go,” he said;
“I fancy we have seen the last of them.”
And they had, for some time at least.
There was little use lingering any
longer on Phantom Mountain—indeed little
of it was left on which to remain. Looking back
toward the place where the cave had been, Tom and the
others started forward again. The diamond-making
machinery had all been destroyed. So, also, had
the finished diamonds stored in the cavern and the
large supply which had probably been made by the last
terrific crash. No one would ever have them now.
Tom and Mr. Jenks felt a sense of disappointment,
but they were glad to have escaped with their lives.
They sought their former camp, but the tent and all
their food was buried under tons of earth and rocks.
Three days later, after rather severe
hardships, they were near the place where they had
left the Red Cloud. They had suffered cold and
hunger, for they had no food supplies, and, had it
not been that Bill Renshaw knew the haunts of some
game, of which they managed to snare some, they would
have fared badly, for they had left their guns in
the cave.
“Well, there are the trees behind
which I hope my airship is hidden,” announced
Tom, as they came to the spot. “Good old
Red Cloud! Maybe we won’t do some eating
when we get aboard, eh?”
“Bless my appetite! but we certainly
will!” cried Mr. Damon.
“There’s somebody walking
around the place,” spoke Mr. Jenks.
“I hope it’s no one who
has damaged the ship,” came from Tom, apprehensively.
He broke into a run, and soon confronted an aged miner,
who seemed to have established a rude sort of camp
near the airship.
“Is anything the matter?”
asked Tom, breathlessly. “Is my airship
all right?”
“I guess she’s all right,
stranger,” was the reply. “I don’t
know much about these contraptions, but I haven’t
touched her. I knowed she was an airship, for
I’ve seen pictures of ’em, and I’ve
been waiting until the owner came along.”
“Why?” asked Tom, wonderingly.
“Because I’ve got a proposition
to make to you,” went on the miner, who said
his name was Abe Abercrombie. “I’ve
been a miner for a good many years, and I’m
just back from Alaska, prospecting around here.
I haven’t had any luck, but I know of a gold
mine in Alaska that will make us all rich. Only
it needs an airship to get to it, and I’ve been
figuring how to hire one. Then I comes along,
and I sees this big one, and I makes up my mind to
stay here until the owners come back. That’s
what I’ve done. Now, if I prove that I’m
telling the truth, will you go to Alaska—to
the valley of gold with me?”
“I don’t know,”
answered Tom, to whom the proposition was rather sudden.
“We’ve just had some pretty startling adventures,
and we’re almost starved. Wait until we
get something to eat, and we’ll talk. Come
aboard the Red Cloud,” and the lad led the way
to his craft which was in as good condition as when
he left it to go to the diamond cave. Later he
listened to the miner’s story.
Tom Swift did go to the valley of
gold in Alaska, and what happened to him and his companions
there will be told of in the next volume of this series,
to be called “Tom Swift in the Caves of Ice;
or, the Wreck of the Airship.”
It did not take our friends long,
after they had eaten a hearty meal, to generate some
fresh gas, and start the Red Cloud oh her homeward
way. Tom wanted to take Bill Renshaw with him,
but the old man said he would rather remain among
the mountains where he had been born. So, after
paying him well for his services, they said good-by
to him. Abercrombie, the miner, also remained
behind, but promised to call and see Tom in a few months.
“Well, we didn’t make
any money out of this trip,” observed Mr. Jenks,
rather dubiously, as they were nearing Shopton, after
an uneventful trip. “I guess I owe you
considerable, Tom Swift. I promised to get you
a lot of diamonds, but all I have are those I had
from my first visit to the cave.”
“Oh, that’s all right,”
spoke Tom, easily. “The experience was
worth all the trip cost.”
“Speaking of diamonds, look
here!” exclaimed Mr. Damon, suddenly, and he
pulled out a double handful.
“Where did you get them?”
cried the others in astonishment.
“I grabbed them up, as we ran
from the cave,” said the eccentric man; “but,
bless my gaiters! I forgot all about them until
you spoke. We’ll share them.”
These diamonds, some of which were
large, proved very valuable, though the total sum
was far below what Mr. Jenks hoped to make when he
started on the remarkable trip. Tom gave Mary
Nestor a very fine stone, and it was set in a ring,
instead of a pin, this time.
On their arrival in Shopton, where
Mr. Swift, the housekeeper, Mr. Jackson and Eradicate
Sampson were much alarmed for Tom’s safety,
an attempt was made to manufacture diamonds, using
a powerful electric current instead of lightning.
But it was not a success, and so Mr. Jenks concluded
to give up his search for the secret which was lost
on Phantom Mountain.
And now we will take leave of Tom
Swift, to meet him again soon in other adventures
he is destined to have in the caves of ice and the
valley of gold.
THE END