On a Jepp chart, what signifies the highest obstacle?

On a Jepp chart, the highest obstacle is indicated by a blacked out arrow. This symbol serves an essential purpose in navigation, as it alerts pilots to the presence of the most significant physical hazards in the surrounding area. The blacked out arrow visually stands out, ensuring that pilots can easily identify and focus on potential obstacles that may pose a risk during flight operations.

This representation is especially critical in preserving safety, as knowing the height of the highest obstacle allows pilots to plan their approach and departure paths more effectively. In contrast, other symbols on the chart, such as colored dots or asterisk markers, might represent lower or different types of obstacles but do not specifically denote the highest one. A highlighted area could indicate a region of concern, but it does not provide the precise indication of the highest obstacle like the blacked out arrow does.