. Transactions of the Royal Society of New Zealand. nce offifty miles. Two other places on Tongariro are marked by the escapeof steam, which betrays the volcanic forces dormant withinthe mountain. One of these is on the northern slope of TeMari, the other is in the Eed Crater; but neither shows somuch activity as Ketetahi. Above Ketetahi the slope of thecone becomes steeper. It is formed of lava having a compara-tively smooth surface of step-like formation, which greatlyfacilitates the ascent. On reaching the summit of the cone a remarkable sightpresents itself. The top is formed by a circular
. Transactions of the Royal Society of New Zealand. nce offifty miles. Two other places on Tongariro are marked by the escapeof steam, which betrays the volcanic forces dormant withinthe mountain. One of these is on the northern slope of TeMari, the other is in the Eed Crater; but neither shows somuch activity as Ketetahi. Above Ketetahi the slope of thecone becomes steeper. It is formed of lava having a compara-tively smooth surface of step-like formation, which greatlyfacilitates the ascent. On reaching the summit of the cone a remarkable sightpresents itself. The top is formed by a circular area half amile in diameter, which at first strikes one as being perfectlyflat. Closer examination, however, shows minor undulations,the surface of the wind-swept ground being strewn with finesand-like volcanic ashes and lapilli. To the north, and, again,on the opposite side, towards the south, a cliff of lava risingperhaps to 100ft. above the crater-bottom forms the boundary *r«tt*«#n» ^m fphufr Institute Vol. xxi. pi. xxvi. * : IS —: :.; m. $>nm$at;ifrm$ T$m f^alatjir $miiiuHt Vol. xxi. pi. xxvu.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1888
