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Updated: May 21, 2025
INGHIRAMI. A very remarkable ring-plain, 60 miles in diameter, E. of Schickard, with a bright, broad, and nearly continuous border, terraced within, and intersected on the N.E. by narrow valleys, one of which is prolonged over the floor and extends to the central mountain. There are two curious dark spots on the N. side of the interior.
LACROIX. A ring-plain 20 miles in diameter, N. of Schickard. It has a prominent central mountain. SCHICKARD. One of the largest wall-surrounded plains on the visible surface of the moon, extending about 134 miles from N. to S., and about the same from E. to W., enclosing a nearly level area, abounding in detail.
Phocylides A, on the bright S.W. plain, is a large deep crater with a fine crater-row flanking it on the W. WARGENTIN. A most remarkable member of the Phocylides group, flanking the S.E. side of Schickard. Unlike the majority of lunar formations, its floor is raised considerably above the surrounding region, so that it resembles a shallow oval dish turned upside down.
Wargentin, the oval close to the moon's southeast limb, beyond Schickard, is a unique formation in that, instead of its interior being sunk below the general level, it is elevated above it.
There is an isolated mountain at the S.W. end of this, which casts a fine spire of shadow across the floor at sunrise. The interior contains a massive bright central mountain and several little hills. The crest of the wall on the E. is much broken. CLAUSIUS. A small bright ring-plain in an isolated position N.W. of Schickard, with a crater both on its N. and S. rim, and a faint central hill.
LEHMANN. A ring-plain, about 28 miles in length, on the N. of Schickard, with which it is connected by a number of cross-valleys. On a dusky area between it and Schickard stand three prominent deep craters. PHOCYLIDES. This extraordinary walled plain, with its neighbouring enclosures, is structurally very remarkable and suggestive.
It is so deep that the sunshine never touches the larger part of the floor of the inner abyss, and a peak on its eastern wall rises 24,000 feet sheer above the tremendous pit. Other enormous walled plains are Longomontanus, Wilhelm I, Schiller, Bailly, and Schickard. The latter is one hundred and thirty-four miles long and bordered by a ring varying from 4,000 to 9,000 feet in height.
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