Kṛṣṇa's Footprints
It is stated in Śrīmad-Bhāgavatam that when Akrūra, who drove Kṛṣṇa from Vṛndāvana to Mathurā, saw the footprints of Kṛṣṇa on the land of Vṛndāvana, his ecstatic love for Kṛṣṇa increased so much that the hairs on his body stood up. His eyes became overflooded with tears, and in such ecstasy he jumped out of the chariot and fell down on the ground and began to chant, "How wonderful this is! How wonderful this is!"
Similar feelings were expressed by the gopīs when they were going to the bank of the Yamunā and saw Kṛṣṇa's footprints in the dust. When Kṛṣṇa walked on the ground of Vṛndāvana, the marks of His sole (flag, thunderbolt, fish, a rod for controlling elephants, and a lotus flower) would be imprinted upon the dust of the land. The gopīs became overwhelmed simply at seeing those marks on the ground.