III.
I looked ahead as far as I could, and located our fellow voyagers, now here, now there,—white dots on the strangest landscape I had ever seen. I sat down on a barrel of pitch under the welcome shade of a rough shed in the power-house, and had my first glimpse of the great lake.
Why it has been called a “lake,” I fail to discover; it was probably named thus by the English. In that case, the matter is explained; it is called a lake because it is not a lake at all. The Englishman never seems to understand that the object to be named ought to bear some slight relation to its appellative. He decides upon a name, and the unfortunate victim has to fit himself, herself, itself, into its new form as best he can. If this curious deposit had been called the “Pitch Bed,” there might have been some reason in the naming; some, possibly not all, but some of the existing physical conditions would have been suggested to the mind, and the traveller might thus have been able to form an approximate idea of the phenomenon before seeing it.
Instead of a lake, you see a vast, flat, fairly smooth, black surface of pitch, with only here and there small pools of water,—in places, yellowish; in places, clear,—intersecting the black surface in all directions. Sometimes they enlarge, and, uniting, cover the surface quite a distance, and in the centre several feet deep; and again the intersecting, stream-like pools shrink to mere threads, but, as I said, the general aspect of the Pitch Lake is a flat, solid, black surface, covered occasionally with water, the water being only in the crevices between great masses of pitch that have pushed up from beneath.
We were as yet unconvinced of its carrying qualities, and, not wishing to run the risk of getting stuck in the pitch, we waited the approach of one of the trains of little cable-cars, running from the works out on to the lake, which we could see coming toward us. The brakeman is good enough to stop, and we pile into the ridiculous little steel cars and hang on as best we can, while we are sent flying down over a narrow-gauge track, laid on top of the pitch, to the place where most of the digging is going on.
Here a great crew of black men—black as the pitch in which they stand—with bare feet, all with picks, dig out the wonderful formation, which breaks off in great brittle pieces. Seeing these men so fearlessly defying the forces of nature, we gained confidence, and stepped out of the buckets on to the surface of the so-called “lake;” and although our feet would sink in a half-inch or so when we stood still, we found that we could walk everywhere with perfect safety, with the exception of a few places where the surface seemed to be in big bubbles and disposed to crack and break away under us.
It was remarkable to me that the pitch is both viscous and brittle at the same time. When standing still, the water—thick and yellow, with a sulphurous odour—would ooze up about the feet and form new rivulets, which, uniting, would trickle into some near-by pool. There were innumerable small, crater-like openings, some like air-bubbles in the sea beach, others, deep, black holes, two and three feet in diameter, but no appearance of heat or fire. All over the lake, small springs of yellowish fluid were constantly bubbling up into the pools. The supply of pitch is apparently inexhaustible, for, after a great trench has been dug out along these temporary tracks, some four feet deep, and many rods wide, by the next day the hole will again be so far filled that the mining goes on as before.
The manager told us that it had not been found necessary to change the tram tracks for two years, that the level of the pitch fell only seven inches last year, after immense amounts had been removed for shipment.
The depth of this deposit is not known. It has been sounded a number of times, but it seems to be impossible to find the bottom. I do not know the exact dimensions of the lake, but, making a rough estimate, should say that it is half a mile wide, and about a mile long; its extent is said to be about one hundred and ten acres. The great asphalt deposit in Venezuela, which has been the cause of so much recent trouble,—through, I am sorry to say, the quarrels of two American companies,—is thought by some to be shallower than the one of La Brea, although it is apparently much larger, being in the neighbourhood of ten miles in circumference. This Trinidad pitch is also worked by an American company, under concession from the British Colonial Government.