A map showing a potential path of a border wall in South Texas lays out a non-contiguous, 60-mile route that would, in some cases, close gaps within the existing border fence and in others, construct segments of wall intermittently over miles.

Officials have said the map's route is only a consideration at this point, with no plans set in stone.

According to the preliminary map obtained by the Caller-Times, about 28 miles would connect lengths of existing fence from Penitas through Progreso, while another 32 miles would see pieces of wall constructed intermittently along the border from Lake Falcon to Sullivan City.

The map, dated July 21, is marked as "pre-decisional."

It's unclear why there appears to be miles of gaps between the proposed border wall.

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Texas and the Southwest border

What you should know:

Border spans 1,954 miles. Two-thirds of it — 1,254 miles — is in Texas.

In all, 23 American counties lay on the border. Of them, 14 are in Texas.

The Border Patrol staffs more than 18,500 agents on the Southwest border today, up from 9,100 in 2001.

CBP now screens 100 percent of southbound rail shipments for illegal weapons, drugs, and cash, has expanded Unmanned Aircraft System, commonly referred to as drones, coverage to the entire Southwest border and completed 651 miles of fencing.

Nearly 40 percent of all exports from Texas go to Mexico. Texas exported $92 billion worth of goods to Mexico in 2015, while it imported $84 billion.

Roughly 12 million people live along the border, from Brownsville to San Diego, in 2000. That figure is expected to double by the year 2025.

Sources: U.S. Department of Homeland Security, International Trade Commission, U.S. Census Bureau