Looks like a broken tree trunk and is also hollow. This trunk is closed at the top and has two small holes, which can turn the trunk into a cave for shrimps, for example. The entrance holes are about 8-10 mm in diameter. Of course, you can also use it to attach plants there.
This piece is in the bargain corner because it is a single piece of a discontinued idea/model series. Without defects.
Height approx. 11 cm
Ø trunk inside approx. 3.5 cm